Engine Oil

[clstark7]

so what do the friends say >>> because THE TRIBOLOGIST stated the DI engines from GM originally needed 30W as a min....then C.A.F.E. requirements had the GM boys switch to 20...and look at us now.

if you really want to know, send samples off and look for bearing material

Exactly. Lake Speed also had another video comparing thicker oils to thinner oils. That video also convinced me to switch to 0W-40 at my next oil change. The wear metals were significantly less with the thicker oil, and horsepower loss was actually less than the thinner oil at hot oil temperatures due to not raining down on the crankshaft from the valvetrain as much as the thinner oil does.

 

[Gangly]

Anyone using Mobile1 0-W40 with dexos instead of the 0-W20 ?

I got a 2011 Z71 with a 5.3 and run Mobil Delvac 15-40 in it for 11 years with 310,000 miles on it , zero issues with the engine

No, but I'm using 5w30 instead of 0w20. Approximately 150K miles on the engine right now.

 

[clstark7]

No, but I'm using 5w30 instead of 0w20. Approximately 150K miles on the engine right now.

Do you have the 6.2 or 5.3?

 

[BigBlackie_'25TB]

Lake has also stated, he was a part of team developing the LT series lubricants...they saw a NEED for 5w30.

how much tighter can the TOLERANCE go before we are metal on metal ??? if 20w is say .002" film thickness, the comment about HIGHER TORQUE at low rpm makes perfect since as to why they are failing...the film is PUSHED out.

why do high performance engine builders NOT recommend 20w oils, if it helps the engine overall ????

 

[Gangly]

Do you have the 6.2 or 5.3?

5.3

 

[BigBlackie_'25TB]

5.3

5.3

 

[clstark7]

5.3

Thanks. My wife has the 5.3 in her Tahoe and it burns oil like crazy. We might run 5W-30 as well!