so when does one think they need more ZDDP in their application? If your running an engine with flat tappets? Race applications? This is very confusing to me, because even under race conditions why would a vehicle need so much ZDDP? Are we assuming that the race car is at WOT for hours and hours and the oil film breaks over time and the ZDDP is there to save the day? Only racing I know like that is maybe NASCAR, but most other racing is not at WOT the WHOLE race. I understand that high quality Group 4/5 oils would be needed to survive the extreme temps, so is it possible to get the group 4/5 without all the ZDDP? I guess if that is the case, what we get over the counter is all one really would ever need. IMO. Seems the term "race" means something different to everybody. What racing is to me, vs. Jeff Gordon would be different.
My #1 question is, if you run lets say Redline in my Evo that is trubo charged. OEM oil is Mobil 1, at the time the car was new, Mobil 1 at the time was SL rated, so there was more ZDDP at the time. Probably around 1000 ZDDP there abouts. Now its in the 900 range. So does that mean, I should go look for an oil that meets what the car originally had in it? It does say in the manual SL or Higher. Which to me means the SM should be fine. If thats the case, then why do all the tuners I talk to want me to run a 20/50 oil? vs. the 10/30 it comes with? I doubt very much that the 10/30 would shear that badly, and I am never in the temp range to require a 20/50 EXCEPT when on the dyno, or possibly Solo II events, but even then its never above 100C, the dyno can see 100C though. For DD dutey though a 20/50? just sounds abserd and im the one thats the idiot in the Evo forums? I can see if your Evo has a built motor and custom specs set by someone, but if your running OEM stuff, then???
Any insight to this? Sorry if this seems repiticious, but I just am curous if using an oil like Redline would benefit me over Mobil 1 for daily use, dyno use, and the ocasional fun day at the track. Mind you, I am not looking for EDI's. Every 3K miles for me is fine. My arguement is, even with bolt on mods, and running more boost than stock, the Mobil 1 should hold up fine. Or is Redline the ticket? Will all that ZDDP in Redline cause deposits on my Turbo Journals? Or will all the ester in Redline keep it clean enough?