will be using Redline 10w40

 

The truck gets Penzoil Platinum with a GM Filter. I change it when the Dashboard tells me to.
The Impreza get whatever the dealer puts in it. Cause it's a lease and free for life.

 

Would you build a $15,000 dollar motor and go to walmart and buy .89 cent oil for it? Big shots of N20 are hell on bearings, a good thick synthetic is a must...

 

I just switched to RP 5-30w with a Mobil 1 filter this weekend, I plan on changing the filter every 3k and topping off with RP, then change it when the computer says...

 

Amsoil 5w30 and Ea filter here

 

Anyone notice a smoother idle or anything running a synthetic over a conventional?? I know there are some people that say they notice some of the piston slap noise is gone, and some cold start up gm tic's are gone anyone noticing that at all or no?

 

6 quarts of castrol gtx 5-30 with 10oz valvoline syn power oil treatment

 

always used mobil 1 when I had my truck. used pennziol platinum in the goat the last oil change or two.

 

A "good, thick" synthetic?

Its not any "thicker" Considering that both are the same weight, one is no "thicker" than the other.

Im not saying you should opt for the cheapest **** out there, but a quality, conventional oil will offer all the protection that 99% of engines need.


Consider this. Synthetic oil has only been mainstream for about 15 years.

Were there not high-horsepower setups before then? How ever did they manage?

With plain ol Dino oil, and they managed just fine.

Top fuel engines, back 30 years ago. Guess what they were running?
Baja 1000 trucks, pikes peak hillclimbs, ect. All done on conventional oil.

 

i use royal purple 10w-30 in the truck and o-reily 10w-30 in the civic and scion tc.