Customer Ratings & Reviews

I was running MAXIMA 10-40w 4 stroke...With this 06 yz450 has a Problem from shifting from Third to Fourth when RPM`s are high...Its common with 06,07.....But did some researching...Had a Motocross Racer suggest running AMSOIL 10w-40 weight for better low friction from Third to Fourth.....So far Hauling Ass....Thanks # 007

Fantastic oil my Honda ATV ran so smoothly after using this oil.

I have run this oil in all my bikes for several years and no complaints at all, all valves stay within spec etc no clutch concerns and do like the clutch feel with the oil.

AMSOIL who is the best I use it in my XR 250 R Honda my Honda four wheeler and all my Harley’s the only drawback is that it’s very expensive I would run it in my Ford 7.3 diesel but that takes 15 quarts would cost over $200 for oil that’s just too much.

Great product, been using this on a 2024 Honda CRF150R since new. Changed regularly due to racing the bike. Seems to hold up very well. Will continue to use it.

We use it in all of our 2 strokes transmissions..keeps the clutch feeling new, and have not had a single issues since we started using this product

I use Amsoil Dirt 10W-40 in my 2024 Honda CRF450, changing every 5 hours. No issues in two years of riding , 75 hours total. This oil adds to the dependability of my bike allowing me to concentrate on my riding, great product!

Transmission shifts better

This is the only oil I put in my dirt bike

My dad picked up a 05 KLR 250 in decent shape still from a Farmer. After running Amsoil in a few different bikes of my own, I suggested Pops do the same. With 1800mi on the speedo, and just poking around the woods with it, should last a long time. Amsoil can't turn back the clock, but if it's in good shape, low miles and plan on keeping it. Its a great product to use.

I have used Amsoil products on several vehicles and motorcycles for decades with excellent results. My newest motorcycle will also use Amsoil 10-50 Dirt Bike oil as this is the recommended oil viscosity. Highly recommend Amsoil for vehicles that are valued.

I use this in my KTM 890R Adventure bike and have not seen the camshaft issues others have seen. I am now on 5k and am a professional mechanic. I keep a close eye on my maintenance and cannot recommend this product enough!

I use this in my ultra rare and valuable Vintage Racing 2 stroke motorcycles as well as my modern 4 stroke Dual Sport bikes. No clutch slippage or bearing issues ever!

I love the 10/50 oil..As a longtime original customer the only thing I really see is this...Amsoil use to send all there customers members hats,tshirts,stickers etc etc..Now all they have done is raise prices,charge delivery fees.I get theres costs etc etc for running a business..But never forget about your customers..The little things MATTER.

Used this in my two stroke used on hard enduro single track trails lots of up hill climbs tree roots and loose rock, I use a aftermarket recluse clutch kit and this keeps it working like new even in a lot of hard clutching climbs with full power, also keeps the bike shifting smooth

Ive ran strictly Amsoil Dirt in my drag Trx450r (500cc) that makes 3x the oem power using oxygenated vp fuel. Over 100hrs of abuse. The motor hasn't skipped a beat. I believe its in large part thanks to Amsoil Dirt.

I use Amsoil Dirt in all my 2 Strokes and it holds up in single trac very well.

Great product

What a difference!. Feels better than before. Less smoke, more power. Doesn't burn as much oil as previous oil brand.

Not a better oil for your quad or bike than amsoil. I have bun running for years and love it!