I use nothing else in my classic car.

I started running Amsoil when I purchased my first Chevy 2500 with the Duramax engine in 2007, I became a Preferred Customer and when I need oil, Amsoil is what I buy, run the racing oil in my 2 camaro Hot Rods, run the Signature Series oil in my Honda Accord work car, purchased a new 2020 GMC Denali 2500 with the Duramax and at 2500 miles changed it to Amsoil Diesel Oil, also run the racing Transmission Fluid in my 2 hot rods and my old Duramax and will be changing the transmission fluid in my new truck in a few more miles, also run the Amsoil gear oil my hot rods and want to change my truck gear oil to Amsoil soon, have had no problems and hope that the Amsoil is going to make everything last longer, also run Amsoil filters on everything

Excellent quality oil, perfect for a performance small block Chevy engine with flat tappet camshaft.

I started using Z-Rod motor oil in my 68 Charger last year. I have tried many other motor oils in my 440 engine. These big block engines create a lot of heat and are pretty tough on oil. With the Z-Rod oil, I find my engine runs cooler and just seems to run so much better. It's not uncommon for big block Chrysler engines to be topped up with oil every so often but with this oil, my engine doesn't require a top up nearly as often. This is my second case I've ordered and will run nothing else in my classic car.

I have used Z-Rod 20W-50 in my 383 Stroker motor since 2014. This engine is on my Airboat and will often get run very hard for extended periods of time. The motor runs fantastic and does not use any oil. I would highly recommend this oil.

Have been using a lot of different types of oil but I gotta meet this one here is number 1 this dominator is an awesome product

Ordered the oil for my Classic Car within 2 days I had received it already. Definitely will order again

I run Z-Rod in all my classics ,'64 Impala, '69 Stingray and my '63 Scout Model 80. I wouldn't trust these awesome rides to anything else.

First time using this oil and I'm glad I discovered this AMSOIL product. My Range Rover has a Rover V8 that really needs the Zinc additive to prevent excess wear. This seems to be doing the trick. I pulled the dipstick 1500 miles in and the oil still looks fresh and clear with only a slight darkening. I believe this is going to be my go to oil from now on!

Old big block loves it.

Have been involved in drag racing over 30 years. I use Amsoil for all areas of my car, engine-rear end-transmission. have never had a major failure in all this time. don't know if that is just luck or the type of oils I use. I prefer to believe its related to the Amasoil products.

I run it in all my commercial mowers never had a problem with it I know my engines are protected by running this oil

best oil for my GS skylark

I lost oil psi on my 496 bbc and I believe this oil saved me from having to do a rebuild Fixed the oil issue and engine still running with no problems

Switched to Amsoil a fee years ago never thought we could afford synthetic number 1 and or number 2 didn't think we needed it boy was I wrong. . Thankfully we did and it was the best thing for our Raceteam

Use in my Street Rod, ZZ-4 increased oil pressure at idle some 15 lbs. Have previously used in a Corvette that I road raced, great product. After engine tear down and really beating on the car engine 4000-5500RPM's for some 15 races no bearing wear what so ever dont wasted your $$ on other products, firm believer in AMSOIL

Works great in my John Deere commercial zero turn mower

Ordered a case of oil, got it within a couple days. Everything was in good condition and oil made everything run smooth.

Have been using Dominator 15w50 in my small displacement high-rev race motors for years and have had no lubrication-related failures. Great with flat tappet cams -

WELL I HAVE GOOD LUCK WITH ALL THE AMSOIL PRODUCTS. I HAVE USED THIS IN MY 1980 Z/28 WITH GET SERVICE FOR 20YEARS. THANKS JPK