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2point · 08-27-2009, 04:31 PM

http://www.zddplus.com/TechBrief11%2...ubrication.pdf

Tech Breif on the analysis of engines and the need for oil lubrication, film thickness, shearing effects, oil applied to different areas of engine, why this and that.

some take aways
1.) mfg specs a weight b/c of bearing tollerances and a give and take relationship to which where they feel film thickness can be sacrificed.
2.) Don't put thicker oil in your engine just b/c. only if you are exceeding the MFG normal opperating (oil)temps all the time but even then, it better be for an extended period of time.
3.) If you do hot starts with your car, try going from 5W to a 10W for increased protection.
4.) ZDDP is an important additive for engines with high pressure head designs. (not sure how high pressures are in K20s compared to LS1 350s but with high lob cams and stiffer valve springs, I bet it gets up there!)
5.) more knowledge on stuff you probably don't even need to know about oil and engines!

08-27-2009, 04:31 PM	#19 (permalink)
2point Senior Member Join Date: Sep 2008 Location: AZ Age: 31 Posts: 1,653	http://www.zddplus.com/TechBrief11%2...ubrication.pdf Tech Breif on the analysis of engines and the need for oil lubrication, film thickness, shearing effects, oil applied to different areas of engine, why this and that. some take aways 1.) mfg specs a weight b/c of bearing tollerances and a give and take relationship to which where they feel film thickness can be sacrificed. 2.) Don't put thicker oil in your engine just b/c. only if you are exceeding the MFG normal opperating (oil)temps all the time but even then, it better be for an extended period of time. 3.) If you do hot starts with your car, try going from 5W to a 10W for increased protection. 4.) ZDDP is an important additive for engines with high pressure head designs. (not sure how high pressures are in K20s compared to LS1 350s but with high lob cams and stiffer valve springs, I bet it gets up there!) 5.) more knowledge on stuff you probably don't even need to know about oil and engines!