Yet another oil thread *caution* science content

[KRAM36]

Originally Posted by JFP in PA

Don't buy it because Jake uses it, buy it for its superior ZDDP content and better film strength than most of the highly touted synthetics on the market.

All that stuff goes over my head. I understand the weight part, but the rest is gibberish to me. So I have to really on what the Porsche specialist recommend.

That's the one thing that worries me about the Joe Gibbs DT40 5W-40. I changed to Mobil 1 High Mileage 10W-30 and got engine clatter at start up. Went back to Mobil 1 0W-40 and no engine clatter.

I did read Redline 5W-40 will stop engine clatter some people were having, not sure what they were using previously.

[BFeller]

Originally Posted by KRAM36

......I changed to Mobil 1 High Mileage 10W-30 and got engine clatter at start up. Went back to Mobil 1 0W-40 and no engine clatter.......

What I read is the ZDDP additives are best for our engines. They build/create/generate a film/surface barrier/slime (whatever you want to think of it as) that protects the multiple metal parts as they are rubbing against each other. The high detergents levels in a High Mileage oil wash away the "film/surface barrier/slime".

That's my summary - I will now runaway from the grenade that is an oil discussions......