Engine sounds great seems to run quite Good oil pressure

This stuff is perfect for protecting my big block with a flat tappet cam. Really quality oil here, I don’t use any other brand in my vehicles!

I've been using this oil for several years now and it has always performed great. At times I abuse my engine with heavy towing and I have always been satisfied with the protection it gives. Good stuff---

Using on my 1963 Buick Skylark. Needed Earl Wiff Some ZiNK. In it. And eYe Noticed that it was Smooth Right after the oil change... i could notice a difference, seemed Smooth... hard to explain but I feel it does a little smother right after an earl change. Best oil for your Flat Tappett Cam.

In the early days when I was building custom cars and street rods there weren't roller camshafts so the oil had ingredients to protect flat tappet camshafts, along came Catalytic converters so oil companies removed the Zink & Phosphorus from their oil as they destroyed Catalytic Converters!!!!!! Most all classic cars restored don't have a Catalytic Converter, but need an oil with Zink & Phosphorus tp protect there camshafts during break-in and after that as well!!! Z-Rod has these ingredients in it!!!!!

I decided to use this for the winter storage months. Will be using the AMSOIL regular synthetic for the warmer driving months.

I'm amazed at how many car guys still don't know this. Conventional motor oil formulation has changed alot over the years. Do you wonder why your performance flat tappet is history? It's not the cam. The high pressure scrub requires ZINC to keep from murdering your valve train components. Specifically camshafts and valve lifters. That's why we use Z-Rod in all of our non-roller profile applications !!

I have a numbers matching 1969 Chevy Nova with a 396 CID engine with 375HP. That motor from the factory has solid lifters. Since car manufacturers stopped using solid lifters over 40 years ago the motor oils available today don't have enough Zinc Phosphorous to properly lubricate that kind of engine. My car is a street car, not a race car, and Z-Rod fills the bill for that better than any other oil I have found.

I own a summer/track HPDE 1.6L Miata. I tried all the major brands of oil. The harder I drove, the louder the lifters would get. Even driving on the interstate. About 10 years ago I went to the PRI show in Indy. And had a nice conversation at the Amsoil booth with a very knowledgeable gentleman, explaining my situation. Since this car is driven hard and at high RPM, he suggested Z-ROD. Quieted it right down. No more lifter noise, even at startup. The oil analysis always come back great. Very low wear numbers. I could not be happier with Z-ROD 10W-30 in the Miata. Still on the original lifters. As far as I am concerned, noise equals wear. Where all the majors failed to quiet it down Z-ROD did the job. I will never use anything else in it.

Perfect for running in your performance motors that require that extra protection.

Can always find what I want and have it delivered LIGHTNING FAST!!!!!!!!!!!!!!!!!!!!!!!!! A+++++++++++++++ 10 OUT OF 10!!!!!!!!!!!!!!!!! AMSOIL IS SECOND TO NON!!!!!!!!!!!!!!!

Exactly what you would expect from amsoil. Best oil on the planet and my flat tappet cam in my sbc is loving it

2 classic chevy trucks and a Harley i would not chance another oil. Amsoil has been my go to for 30+ years.

Ever since making the switch in my small block I run it in all flat Tappet cam shaft motors

prompt delivery (next day)...excellent product

The oil is great, just didn't receive my added gift for my order.

I’ve tired quite a few different oils in my Corvair engine and this is the one it likes best. Just did 1200 miles on the HotRod Powertour and she didn’t burn a drop. The engine is a 110HP air cooled flat six out of a Monza 900. I run it in a Greenbrier. You have a Corvair? Try ZRod 10-30 and see for yourself. Peace

I have a 79 Firebird with a Pontiac 400. Motor has a roller cam, lifters and rockers. This is the only oil on the markert I trust for this car. These old engines need the high zinc content, they are not like modern engines, Motor makes about 400 hp. One trip we went over a bridge and when we stopped in traffic the car began to overheat bad. Got so hot the top radiator hose blew up, shooting 300 deg antifreeze everywhere. I told my wife its a good thing I have Amsoil in it or the motor would have been ruined. Fixed the overheating issue the car runs perfect. Thank you Amsoil.

Love it !!

I did not want to hunt down zinc and a good additive package so Amsoil it is. Good performance and i am not wondering when my flat tappet cam will get wiped out...