На том же пеликане пишут про недостаточную произволительность системы смазки
Oil System Inadequacy: The air cooled predecessor to the M96 engine incorporated a dry-sump system that was designed to keep a significant amount of oil in reserve for extended performance driving. With the introduction of the M96 engine, Porsche moved away from that design, primarily due to the high cost of implementing a separate dry sump system. The M96/M97 motors instead were designed with a compromise system, which has an oil sump built into the bottom of the engine: a kind of hybrid between a dedicated dry sump system and a typical wet sump. As a result of the lower oil holding capacity and other factors, the M96/M97 engines tend to suffer more from oil starvation problems, particularly during high performance driving.
There are a few things you can do to protect against oil starvation problems. Firstly, be sure that your oil level is always at the high level mark of your dipstick. The M96/M97 engine doesn't have a vast extra supply of oil, so if you're a quart low, it's a significant amount. You can also add in a deep sump kit (see Pelican Technical Article: Oil Pan Gasket Replacement / Deep Sump Installation), which will expand the oil capacity of the sump by about a half a quart. Finally, you can install an Accusump oil accumulator system that will protect against unexpected oil pressure drops (see Photo 5 of Pelican Technical Article: Track Preparation / Rollbar extension).
In addition to the standard issues associated with the non-traditional sump system, the flapper windows on the bottom of the engine are manufactured out of plastic, and can break off inside the sump and clog the oil pickup tube. This leads to oil starvation and complete engine failure. The solution is to remove the bottom sump and inspect the oil control windows (see Pelican Technical Article: Oil Pan Gasket Replacement / Deep Sump Installation), and replace them if they are missing or damaged. You can also add aftermarket stainless steel windows for added protection.
As mentioned previously in Pelican Technical Article: Oil Change, I do not care for Porsche's standard recommended oil change interval of 15,000 miles. The oil in engines tends to become contaminated with fuel and coolant, particularly as the cars age and seals and piston rings begin to wear. I generally like to run a thicker oil and change it every 3000 to 5000 miles. Keeping the oil fresh may help prevent some IMS bearing issues and generally prolong the life of your engine.
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