Product Reviewed: 10W-40 Synthetic Metric Motorcycle Oil (MCF)
Current Rating: 4.9 out of 5 stars
Votes & Reviews: 240 vote(s) and 218 user reviews.
Reviewed by Sammy: 
You know how hot it gets in Florida especially when the motor is cooking on main st in Daytona. Amsoil significantly reduced how hot the motor gets and eliminated a ton of valvetrain noise. Simply put, I run Amsoil in all my bikes and vehicles.
Reviewed by Sammy:
You know how hot it gets in Florida especially when the motor is cooking on main st in Daytona. Amsoil significantly reduced how hot the motor gets and eliminated a ton of valvetrain noise. Simply put, I run Amsoil in all my bikes and vehicles.
Reviewed by Rootmiestet:
Well I finally forked up the money to see the big difference and I must say I am rather happy with it I do believe it runs smoother and idles much nicer and over the last year I am a buyer for life I put it in my bike and that was a much more noticeable impact and I loved the way it ran and felt also kept a temp on it over the course of the year and above anything else that dropped to a much better temp not nearly as hot as it was with one dealer oil
Reviewed by Bill:
Found the difference shows up in early spring and late fall, shifting seems to be easier and everything just seems to run smoother
Reviewed by Sonic Moto:
When I had a Suzuki GSX-S750 a handful of dealerships suggested Amsoil and it's something I've used in all of the bikes I've owned now. While it works amazingly well and keeps an engine cool while lasting longer than some oils, I find the only fault is the higher price.
Reviewed by peterj59efi:
love it and trust it
Reviewed by Biker Bill:
I use AMSOIL in all of my vehicles. I have had no issues and most of the equipment that I own is at least 10 years old.
Reviewed by Valk Dude:
I had been using Mobile 1 in my Valkyrie. During a trip from Denver to Tucson on a Memorial Day weekend I noticed clunky shifting when I got to Tucson. The temp was pushing 100 and we encountered some stop and go traffic. The tranny was definitely shifting hard. It seemed that the oil had broken down more than normal. That summer I was at a goldwing rally and stopped at the Amsoil booth to talk with a representative. I told him about the hard shifting. He told me that Mobile 1 had reduced the amount of silicates in their synthetics. He told me to try the 10W-40 Metric. He said I would notice a difference. He's the rep, he has to say that. However, I had heard good things about Amsoil from some other riders so decided to give it a try. What an unbelievable difference. Just shifting into 1st (which there is usually a clunk) and driving out of my neighborhood the shifting was smoother than it ever had been. I gave that oil change 5000 miles. Our trip that summer was the remainder of Route 66 from Amarillo to Santa Monica. Going thru Needles it was 106. Never did the shifting get hard or cluncky. My Valkyrie has 108,000 miles and I also bought an 05 Wing which shifts smooth as silk. Best oil ever!!
Reviewed by Ted:
Works well in my gold wing I have run Ams oil in 4 of them never had a problem Over half 1,000,000 miles between the four of them
Reviewed by GW02:
I use Amsoil Synthetic in all of my motorcycle. I've noticed reduced cam noise and quicker warm ups.
Reviewed by Ted:
Works well in my gold wing I have run Ams oil in 4 of them never had a problem Over half 1,000,000 miles between the four of them
Reviewed by Sambo:
Four motor cycle is how,I use it. 2005 Honda etc 1800 . 2003 Kawasaki mean streak. 2005 yamaha 1500 warrior and 2007 Yamaha 1500 warrior.
Reviewed by Rob:
I been running Ams oil for years.
Have good luck with Ams oil
The long change interval proves its quality.
I don't run long charge intervals but it's nice to no you can
Reviewed by ON THE ROAD AGAIN:
When I was younger I road motorcycle until I was 25. After not having a bike for 38 years I bought a vintage 1984 Honda Goldwing. After reading many articles and trying different oils, I decided to use and oil since my son raved about it.The bike runs so much better and shifts effortlessly. I couldn't be more please with the results. Thanks for making such a great product!!
Reviewed by Andrewlively:
Great oil
Reviewed by New bike:
Put this in my ZRX and FJR, both bikes like it so far and fuel mileage is up a little.
Reviewed by Bassman:
I have over 60,000 miles on my 1993 Honda CBR1000F. Before using Amsoil, valve adjustments were an annual ritual. Since switching to Amsoil at 25,000 miles valve adjustments are few and far between. Oil consumption is low and gas mileage is up 5-10%.
Reviewed by Brant:
I use this product in my 2001 sv650s and I have very good luck with it so far. It has been running alot smoother with the amsoil than the previous oil I was running. So I am very happy with it.
Reviewed by Ricob:
Once you use it you'll make the difference.
Reviewed by Mike:
I rely on Amsoil for the very best. I have it in every thing I own. Two cars, a 3/4 ton truck, two generators and three motorcycles. I wouldn't use any thing else.
Reviewed by BigAl:
I switched over to Amsoil for my motorcycles about 15 years ago. I have always been happy with the performance of this oil!
Reviewed by ??????????????????????????/:
Products are getting a little pricey.
Reviewed by Denny T:
I've used Signature Series Oil in my cars and Metric Oil in my motorcycles for many years. I trust Amsoil because of their reputation and history of quality as well as innovation. The inside of my engines have always been clean with zero sludge.
Reviewed by Bob:
Been using Amsoil in my Suzuki for several years now. Extended oil change intervals and outstanding oiling capabilities are the benefits of this product. Shifting and engine temp are great. Would not use anything else. My sons (2) use this product as weel and are very happy with the results.
Reviewed by Mongo72:
For me using this oil is the finest technology that i can use in my goldwing at this timeJust like every one that owns a motorcycle they want the best so it will last.And in my time ,on my bike ,Amsoil hits that mark of confidence
Reviewed by Jean:
Well never had any motors problem since I am using your oil in my cars motocycle etc.. so your oils etc.....are the best
Reviewed by Jean:
Well never had any motors problem since I am using your oil in my cars motocycle etc.. so your oils etc.....are the best
Reviewed by Hayabusa Pilot:
Use Amsoil Synthetics, filters, and hydraulic fluids for ALL my needs on all my vehicles.
Reviewed by SV-1000:
Great oil. Smooth shifts, good economy, what I expect from an Amsoil product.
Reviewed by PO-BOY RACE-N:
Been using this stuff 4 years exclusively since the price of Spectra went out of control. I have ridden and raced Yamaha's since 1964 and never had an oil leek with the exception of the oil seal on 650 twins clutch disengagement rod. This is a common problem with any oil, and it only ads 2 chain lubrication with an oily back rim. The problem I have been having is with the 650 Seca II clutch cover gasket they cant stop ANSOIL from seeping out after time.
Reviewed by Dave:
Recently bought 2016 bmw r1200rtw this oil makes shifting much easier. Had owned Harleys and ran all amsoil products in them. Not suprised it would work well in my beemer.
Reviewed by Shepy:
Been using Amsoil in my 07 Gsxr 1000 since it was new, still doesn't need a valve adjustment
Reviewed by N/A:
From the first time I used Amsoil to present day use... I always am reminded about how good your products are. First time I used Amsoil in my 1996 Lincoln Mk VIII, it had a sticky valve and always made a tick tick tick noise...always. After two years of driving That Lincoln i tried Amsoil and 5 seconds after startup... that tick went away. Plus mileage went up a few points.
Fast forward to my first oil change on my 2013 Honda F6B motorcycle. Bought
it used like most of my vehicles and I was getting around 34-36 mpg. I bought the Amsoil for Metric Bikes 10-40. First tank of gas I went up 4 mpg. I have been riding motorcycles for 40 years and I ride out in the Texas hill country pretty aggressively for fun. But how nice to get an average of an extra 20 miles of driving range from the same amount of fuel.
Reviewed by Kevin:
I have used it for years in my Super Tenere, and my Honda XR 650
Reviewed by Jimmy:
The only oil I use for my motorcycles
Reviewed by Rod:
I use 10w 40w metric oil in my 2004 Yamaha R-1 and haven't had any issues. I had been using Motul but when a friend turned me on to AMSOIL I was hooked by the price and the quality.
Reviewed by Big L:
From 21st century Yamaha's to 1970's Triumphs this stuff keeps them all running great
Reviewed by Jr:
Wouldnt run anything else.
Reviewed by Long time advocate:
All I use, never failed me, yet.
Reviewed by Rich:
2007 Honda ST1300
Reviewed by Speedy:
I use Amsoil in every one of my vehicles, they vary from cars, trucks, motorcycles, jet skies, etc.
Reviewed by Slippery Piston:
I have a lot of friends who use this in everything from Yamaha 250 all the way to a Kawasaki ZX-14R. They all love how well the transmission shifts and how awesome the clutch feels. They have also reported that their oil temps are slightly lower and much more stable compared to other oils they have used.
Reviewed by Don the man:
Great product.....been using it for years. Had an old bike repaired years ago. Mechanic replaced shift fork in trans. He commented how clean the engine and trans were inside. This bike had been sitting for almost 20 years. Used amsoil for a year prior to repair. Shift fork was damaged by a young rider not by lack of lubrication. Mechanic was totally impressed. Sold me on the product. I use on all my new bikes today. Never an issue. Superb heat disapation and lubrication. Highly recommend this product.
Reviewed by mr T:
use in a custom bike, 2050 cc's & I can count on it to keep me on the road.
Reviewed by Stevie B:
I'm in the process of switching everything I own to amsoil. When it comes to protection amsoil is it
Reviewed by Fat Boy:
I have used it in every motorcycle that I have owned in the past 15 years and never had a problem with the engine's or cluck.
Reviewed by cowboy:
I put it in my cars, truck and bike's
Reviewed by All*Star:
Works great love the wet clutch feel this oil provides over convential motor oil.
Reviewed by Kevin:
I have been using Amsoil 20 years this is all I use in my cars trucks and motorcycles don't use anything else there warranty is unbelievable
Reviewed by Louis:
This oil is the best PERIOD !!! Look at ALL the oil test. This oil is #1. This oil even beat Motul 300V which WAS my previous oil brand. Nothing else will go in my BMW S1000RR. EVER !!!!!
Reviewed by Dr. Demolition:
I use Amsoil in my Ducati's, Triumphs, Kawasaki's, Honda's and my Volvo. I use the filters too. Great products. Never a worry about lubrication or excess heat. Just the best. I haven't used dinosaur oil in decades.
Reviewed by Tmac:
Easy pore bottles, covers most all metric bike utv and atv applications
Reviewed by kiwi:
great product
Reviewed by Gw Rider:
Have run this oil in my Honda goldwing since day one wouldn't use anything else
Reviewed by Lucan:
I have been running this oil ever since 2010 in my Kawasaki 900 Motorcycle. I have ran it to at least 6000 miles between changes.The 900 is a smaller bike and I really have put some rugged miles on it. I am very impressed with the quality of the oil, and will always use it in any other bike that I may acquire.
Reviewed by NinjaJon:
I have 75,000 miles on the Ninja 1000 and its like new inside (bore scope). I run a new bike on the good old dinosaur oil for 7500 miles then switch to AMSOIL. Been great for two bike and many miles. It's the only oil I run.
Reviewed by Richardv:
We like this oil. I use it in our 4 Can-Am Spyders. When I switched to Amsoil from BRP oil, both my wife and daugther asked me what I did to their bike....? They saw the different without knowing I didn't use the same oil. They both said: " It is more silent and smoother."
I guess it says it all. ;-)
Reviewed by Biner:
Own a 2002 Goldwing,only oil that my wing knows. Run's cooler than most wings and I get better than 40 MPG. The best part is I only have to change my oil once a year !!
Reviewed by Binor:
Own a 2002 Goldwing,only oil that my wing knows. Run's cooler than most wings and I get better than 40 MPG. The best part is I only have to change my oil once a year !!
Reviewed by Texas D:
Moving into changing the oil and servicing my two bikes, I've decided to go with a good quality synthetic oil so AMSOIL was the obvious choice. Great reliable product.
Reviewed by Eddie:
Great oil and last for a while. I was riding my motorcycle from Jacksonville to San Jose then Bryce Canyon, Grand Canyon, Utah, NW, etc around 7K miles and the oil was still good and the engine was running smooth.
Reviewed by bikommuter:
I use Amsoil in everything I own with an engine. It goes in my new car, my old bikes and my lawnmower. I use it when I service someone else's engine. I get extended oil changes in everything so it's less expensive than the bargain stuff from the local auto store. I use the Ea filters whenever possible because they filter smaller particles which means my engines last longer and run cooler. I can't think of any reason to use anything else.
Reviewed by Rickiibii:
This oil made my bike run cooler and shift smoother. This time and every time. AMSOIL !!!
Reviewed by Wildman:
The price is right, the shipping time great, been using amsoil since 1975 and expect to continue
Reviewed by TailGunner:
My garage is tech central for my club (LostSouls)and Amsoil is the only oil we use. Since 2001 we have been using it and after awhile started changing it out after 8k instead of 4k and our bikes all got over 100k. Thats hard miles. We love this oil!
Reviewed by Bobby:
My application is for a 2007 Suzuki GSXR1000 about 20k miles on it and well maintained. This 10w40 metric full synthetic oil does not cause clutch slippage at all and provides excellent engine protection. I ride to work and live close to home as a daily driver and I can now change just once a year since I typically drive about 2000 miles per year anyway. It shifts smooth and I notice less engine noise/vibration especially in the bars.
Reviewed by Goldenpony:
I want only the best oil for my Suzuki C-50 and AMSOIL along with an AMSOIL EA filter is the best.
Reviewed by Ken:
Delivery to house, same cost as lesser quality synthetics.
Reviewed by doozerdave:
I've been using Amsoil 10W-40 motorcycle oil in my street bikes for over 15 years. I had a CBR600 with 95000km that used Amsoil from the first oil change. That bike had a spirited life with lots of commuting and many high paced track days. At that high odometer it had great dyno numbers, didn't burn any oil, and had never had any engine problems. When I was replacing my clutch at about 85000km I inspected some engine internals and it was amazing how clean a free of wear everything was.
Reviewed by James:
Been using this oil in my bikes for years.. never had a problem
Reviewed by How:
Good for wet clutch application.
Reviewed by Karl:
I use this on my 2015 Yamaha FJR 1300. I've been using this since the second oil change and have had the oil tested at a lab for results. I now have 22k miles logged as of this review. The lab is impressed with the results and has recommended to extend the drain cycle as this oil is performing better than expected. I use Amsoil in all of my machines and the lab results prove that it's the best product for the money.
Reviewed by Daniel:
I use this product in all my metric bikes. Wet clutches and transmissions perform flawlessly with silky smooth shifts. Orders are always filled on the same day and shipped fast right to my door.
Reviewed by Ralph:
The best oil for my SPYDER and the fastest service..!
Reviewed by Willie:
Amazing oil. Never fails to hold up to the punishment.
Reviewed by Lilik:
Tested ride coast to coast from Jax to San Diego in 49 hours then back.
Reviewed by Brendan:
I use it for an assortment of Honda motorcycles. Fantastic oil. I've tried all the expensive full-synthetics, and this one is the best.
Reviewed by Ben:
Use it in my VTX 1300 motorcycle, only use amsoil in all toys since 1999. Never have had a problem and engines look like new inside using amsoil.
Reviewed by Robert:
Did a 21,500 km road trip this summer. I did 2 oil and filter changes. Bike ran perfectly, and everything worked fine. Shifting, temperature, smooth idling....all good.
I will use Amsoil from now on.
Reviewed by Frankie:
I use this in my 2915 Yamaha r1. When I change the oil you can feel an immediate difference. This oil makes my bike run like new.... smoother shifting and quieter engine noises.. I love this oil! I highly recommend it.
Reviewed by Benjamin:
Only oil I will put in my motorcycle best oil on the market
Reviewed by Leonard:
I use this oil exclusively in my goldwing mc and have 156,000 trouble free miles on it so far.
Reviewed by LJ:
I've been using this product in my GoldWing motorcycle shortly after purchasing it brand new in 2012. I noticed right away a smoother gear shift. I love the longer oil change intervals while still providing new oil protection.
Reviewed by ArkProf:
I've been very pleased since switching to Amsoil back in 2010 and I'm still pleased with it. The company has an organized web site that is easy to navigate and there's plenty of product variety listed. Amsoil provides fast, efficient service, ie order processing and delivery. The prices are competitive and the 10x40 I buy for my Royal Star Tour Deluxe keeps everything running smoothly.
Reviewed by Sean Stettnichs:
I personally run AMSOIL 10W-40 Synthetic Metric Motorcycle Oil through my road bike for the street and race bike at the track. This oil has always held up very well for me and always seems to outlast the filter. I swap it out every time I make a filter change (just out of habit), but it always looks as clear as when I first put it in.
When racing, I'm always on the throttle and make very hard downshifts (probably worse than I should). I have yet to see this oil deteriorate on me, even when stressing a motor very hard. I couldn't be happier with its performance so far this race season.
I recommend AMSOIL products to everyone I come across, whether on the street or at the track. As long as they continue to make high quality products, I will continue to
do so moving forward.
Reviewed by wrong way steve:
I've used this product in my motorcycle for the past 3 motorcycles....It might be just me, but I find that the bike runs cooler, and quieter.....No difference in gas mileage, but overall, I'll be using this for as long as I own motorcycles.....contemplating using it in my car....why not.......adds to the resale value..........
Reviewed by Irishman:
Had another unknown oil in bike from person I bought bike from. I use Amsoil on my car so I bought it for my bike. I noticed immediately that bike was not as loud when driving it, but most importantly the shifts were smooth from the shift lever. Smooth shifts are nice, especially when you drive a lot. Try Amsoil, you won't be disappointed.
Reviewed by mastercard:
This has been a great oil for my two motorcycles. Runs better and helps with fuel mileage
Reviewed by Matlock:
I use amsoil metric 1040 in my 2012 ZX14R. It takes a beating from the big 1441cc. Always shifts smoothly and always run smoothly. I also use AMSOIL for ATVs in my 2000 Warrior 350 sport quad. Again, takes the hard abuse and keeps the motor running cool and smooth. Solid clutches! Recently flushed the brake fluid in my ZX14R and replaced with AMSOIL DOT4 Brake Fluid. They just makebawesome quality products. I only trust my toys with AMSOIL!
Reviewed by Danny self:
Going to start with my Pontiac grand am GT next. With an Amsoil filter as well
Reviewed by DKL:
Running in a '14 Yamaha R1, no measurable consumption after almost 3000 miles.
Reviewed by Bej:
Oil seems to work well and has quieted down the chatter from the clutch, as well as minimized the lifters tap on startup. Will buy again.
Reviewed by Stewart:
Good Stuff! Helps keep the engine cool and in Florida that's a good thing.
Reviewed by Rockon:
I am the Assistant Chapter Director and Senior Educator for a local chapter of GWRRA.
We all have large beautiful machines that we ride hundred of mile at a time in all types of weather
conditions. Our Goldwings get consistant protection form the high quality AMSOIL synthetic motor oil we all use. And as a Amsoil member, I am able to pass along a discount to my fellow riders. We are headed to Billings Montana next. 2500 mille trip.
Reviewed by Hoss:
Stunning capability, never run smoother
Reviewed by Da Wang:
I only use Amisol 10w-40 in my GL1800 nothing but the best for my baby . Delivery is always fast.
Reviewed by Monkman Rider:
I have used this product in my motorcycle and my son uses it in his motorcycle. My bike use to shut down on hot days due to over temperature. Since using this product, my bike has not shutdown even in hot weather. Also I can go from oil change to oil change without adding oil. In my opinion a very good oil!
Reviewed by Allie:
Great product, my motorcycles love it. Never had a problem, smooth shifting and runs cool. They will always be filled with Amsoil
Reviewed by Won Honez:
I've been using Amsoil Synthetic 10-40 motorcycle oil for nine years in both my Kawasaki Z1000 and ZX14. Both bikes have way more than a thousand runs on each and never had an issue. I've won the Alaska Raceway open air championship four times in 9 years twice on each bike and believe in Amsoil products.
Canada
United States
Just seems this oil makes my motorcycles shift better
I use Amsoil in my motorcycles for the protection and longivity