hacker-pschorr

From the Joe Gibbs website in their break in oil:

Or use EOS from GM (first product):

http://www.goodwrench.com/PartsAcces...reProducts.jsp

BC

Thanks guys. Good info.

I need to decide today, as I want to stick the pistons in tonight and maybe tuesday. I soak the pistons (with rings) in the engine oil first and then put them in.

If I can't find the EOS, I may was well go with Rotella that Hammer suggested. That will be accessible at 5pm today.

hacker-pschorr

I've seen some engine builders will coat the pistons / bearings with assembly lube, bake it in an oven for a few hours.

Not saying this is necessary, just related to the thread

6.0-928S

Brendan,
Found this info:
"If you go with STP use the red 4 cylinder stuff. About 1800 ppm zinc and phos. It's a lot thinner than the other. I rather would recommend Valvoline Synpower Oil Treatment, 15 oz, which has about 1700 ppm z and p and moly boron and other goodies. Very nice stuff.

Big lots was selling CD2 High Perf Oil Boost which has about 4800 ppm z and p. Also CD2 75K oil add which has about 4000 ppm z and p. There are others if youwant to test them, including some stuff in round quart size by stp and fram.

GM EOS is around 8000 ppm z and p.

Modern oil about 800 ppm z and p. SL was around 1000 ppm. SH IIRC around 1200 ppm.

Citgo Ultralife is 1150 z and 1050 p per phone call to them last year. Or go dual rated diesel/gas oil (SL/CF) which typically has more zddp."

The Shell was around 1500ppm IIRC. The EOS may be the best bet.

Hammer

RyanPerrella

Interesting info Hammer

BC

So a good HDEO plus some EOS?

Thanks for the info Hammer.