2KSSLS1

i was wondering that im burning oil on 5-30 should i move up to 10-30..??/

lrmneil

I have been using 10/30 valvoline since the first oil change and it has never used a drop with 16k on it now.

2KSSLS1

i'll just move up too 10-30 how does it run

Cummins

iTrader: (2)

i run 10-30 full synthetic, never had a prob. (for 15k miles)

SSDude

You should look at the viscosity of the oil and not just the weight. Some 0w-30 oils are heavier than 10w-30 oils. For example Redline 5w-30 is 10.9 cst@100*C and Redline 10w-30 is 10.7 cst@100*C. German Castro Syntec 0w-30 is heavier than both of the other oils it is 12.2 cst@100*C. Check out www.bobistheoilguy.com

AZ28DRIVER1

I was burning about a quart every 3,000 mile running 10W- 30 Mobile 1. I switched to the Mobil 1 0W- 40 and that solved the oil consumption problem.

2KSSLS1

thanks guys for your help i'll try 10-30 or 10-40

MARKSZ71

iTrader: (3)

10 30 here and not a drop of oil used

crainholio

iTrader: (2)

Pg 8 of the LS1 Engine Kit Installation Guide specifies, and I quote, "A 10W-30 synthetic oil is suitable for most operating conditions. Operating in extreme heat or cold may require oil with higher or lower viscosity respectively."

Straight from GM.