revolutionaryconcepts
Active LVC Member
anyone considered trying this? or have any relavent oil analysis showing the effectivness of various oil weights in the 3.9's
no all 0 weight oils are synthetic, especially one with polymer expansion like 0/40, thanks for the info about quick I pm'd him already, my only concern is that the oil at temp might starve the rings or the chain tentioners
the tolerances in our engines are no tighter than any other highperformance engine on the market, besides we use to run 20/50 in our blueprinted race engines o/40 is still 0 weight oil, it just has the flow "characteristics" and load support of a 40 weight at operating temp
Ford flat-rates 20w oil due to fuel economy reasons & chain tentioners, they take longer to pump up with anything over 20w, and most will go 100k-150k miles with no moderate wear, however I can assure you as a veteran engine builder, 20w oil does not have the load support necessary for total protection in most v8/v10 engines, especially from ford, I find it insanely difficult to believe that ford engines are ok with 20w while the majority of all other high performance / close tolerance engine manufacturers in the world are using heavier oils & getting more good miles out of their vehicles, and in all honestly in my opinion the rotating assembly of the aj35 in stock form with stock cylinder pressures & loads is just fine with 20w oil, due to its abnormally high oil pressure characteristics, sheering & scuffing are very minimal, the d.a.m.b valavetain is not however, the scary part is, is that every damb equipped engine that ford uses currently, can technically have the entire valvetrain replaced by 45k miles, all current ford engines are considered by ford to be "zero wear" meaning that if you can find any measureable wear on anything, meaning usually .001-.003" its junk and justifiably replaceable