High Performance Engine Oil

I am surprised Amsoil or Royal Purple hasn't come up on this thread, I know everybody has some brand of oil or another they are loyal to, I tend to believe what I see. Years ago I went to a local machine shop/engine builder that does CNC machining, this shop builds a lot of Saturday night special pro-series engines and the builder showed me engines that run on most of the available oils, only the Amsoil engines looked like new at the end of the season and needed nothing but routine freshening up, he stated one engine had over 6000 laps on it and still didn't need anything also showed almost no measurable wear. I have a friend that races stock cars his engines were built by that shop, my friend backed the car into the wall one week and broke the rear main bearing cap he didn't know until after the next week of racing a complete feature race, his engine had almost no oil pressure he thought it was an issue with the gauge yet the engine ran fine and showed no wear because of Amsoil. I have been running Amsoil in everything I own with Wix or NAPA filters for 20+ years and will use nothing else. By the way that engine builder said Mobil1 was garbage and showed me an engine that ran it he was right. I haven't rebuilt my AMC engine yet but already know what oil will be in it.

What is wrong with Brad Penn (now Penngrade 1) oil? I've been thinking about switching to it myself.

Currently using Rotella T 10W30.

Amsoil signature oil is good for 25K at a cost of about $60 per 5 quart oil change + filter, I don't know anyone who drives their classic ride more than that in a year. Not having to crawl under my daily ride more than twice a year (Amsoil recommends changing the oil filter at 6 months) saves me time and hassle ends up with a comparable cost and the best protection. I run Amsoil in almost everything cars, lawn mower, snow thrower also use their 2 cycle oil. The best way to solve a problem is to not have one, saving a few bucks on low performance oil doesn't seem to pan out when it comes to distributor gears.

Edited by JGRANTAMX - Feb/11/2019 at 6:27am

Rebel Machine wrote: I believe this is the page 304-dude is referring to: http://theamcforum.com/FORUM/forum_topics.asp?FID=2&title=amc-v8-engine-repair-and-modifications I've read through this and there's a lot of information there. The author makes the point (many times) that ZDDP isn't the only thing to consider as far as wear is concerned. "Film strength/load carrying capability/shear resistance psi value" is the measure of wear protection according to the blog. Some of the Amsoil oils as well as 5W30 Joe Gibbes Driven LS30 performance synthetic looks pretty good too. -Steve-

Yep, but i did reply in this topic with the same link within another oil thread, its located at tge end of the opening page on the link.

Its an on going oil test that has some oils no longer being produced, which still are part of the list. So its a huge compilation of sorts.

Just because one brand may seem as standard, there are key differences in each product subset. I never knew that Mobil 1 has more options off the shelf than what is advertised or usually picked at the store.

Believe it or not a high milage oil gets pretty good score for not being a performance oil. Trouble is you must keep within the heat range. As it and others will drop in protection by 28%.

Just keep point that a brand makes a good known product and a not so known excellent product that may look similar by packaging. Example the new Penzoil Platinum is not the same as the old Platinum, which was one of the tops on the over the counter oil. I had two 5 quart jugs that i purchased for our cars. One was 30w and the other was 20w, only the 20w was the the original platinum, while the 30w was the new oil. They looked almost identical but the new oil had a logo for the blend to show it was not the same as old type.

Though it was a one time deal, so that said, i am back to Mobil 1, which actually runs cleaner with a 1 micron filter used in conjuction. Purolator finally fixed their product line... some time in 2011 or so they had issues with their top of the line filters. STP, Mobil 1 and Wix still are good 1 micron filters.