Customer Ratings & Reviews

Great oil for a 68 Gtx

A friend recommended this oil to me and I never looked back. I now use it in all my Mopars. Has the additives needed to keep these motors running smooth. Great oil, I'd highly recommend it !!!

Great oil for our 1964 Fleetwood. Only 54,000+ original miles. Extra protection for a classic car driven about 15 miles per week.

It's all I will use.

I have run Z-Rod oil in my 1968 Camaro for years. I rebuilt the big block engine in 2005, and so far have had excellent results. I run Amsoil in every vehicle I own.

Not a bad price for having both anti-corrosion and elevated zinc level. I have a boat with a 351 Windsor flat tappet camshaft engine, this oil is well suited for my application.

Excellent speed and accuracy, in filling my order. Well done by the AMSOIL distributor.

Keeps the engine in my classic purring

After much research and thought I finally decided to switch to synthetic motor oil last year in my 1979 Corvette with a 350 crate engine with low mileage. There had been several oil leaks from the engine area but after running Amsoil Z-Rod, the leaks all stopped. I used it with the Wix oil filter. This year I did the annual oil change and still no leaks and the engine actually purrs differently from previously without the Amsoil. I am a believer.

Changed oil on 09 suburban was getting 15 miles to the gallon went to 19 engine feels and sounds way smoother than other oils for the last 6uears that we have had this vehicle

Bottles were leaking. Probably from shipping

This motor oil is just what my numbers matching 1970 El Camino Custom needed! Idle smoothed right out, motor noise is less and oil pressure is right where it should be. My new Comp Cam is saying thank you!!!

I use this oil in a Ford Cleveland 408 stroker and my 66 Mustang GT 289 A- code engine. After a refresh on the stroker, I literally could have reused the bearings. This is 550+ hp street engine that gets drove like it's supposed to. I use Amsoil in everything I drive. Also, broke in the 408 on the Dyno with the Amsoil break in oil.

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 !!