Quote:
Trundle997S said:
Lots of short duration trips in the first few thousand miles never really let the engine internals seat properly, and oil consumption will be higher.
Yeah lots of short trips will increase oil consumption BUT not maybe not necessarily for the reason you suggest, IMHO. Probably more likely that
during warmup period oil is burned more readily. More warmup cycles means more oil burned.
I think, not a metalurgical expert, that short trips should be defined as ones where system does NOT reach operating temperature for a significant amount of time. I.e. 10 miles would be considered "short" 30 miles would be considered long enough. (arbitrary sounding, yes, but no one at Porsche has defined "short trips" as used in manual) I also "learned" it is important that the car have lots of stone-cold to operating temp to stone-cold cycles during breakin so as crankcase seasoning takes place (establishes it's memory) the other parts are
still breaking in.
The way I understand it, a seasoned crankcase is much more stable (has well-established expansion-contraction memory) than a newly cast one.
Would be great if a team of Porsche Engineers could write the DEFINITIVE essay on the REALITIES of breakin in the engine.
OF course what they say will probably totally upset the marketing/warrenty financial people in the company