TAXFREE

SAE 0W-30 and says the engine left the factory with SAE 0W-30. It also lists 5W-30 and 5W-40 if 0W-30 is unavilable.

tarheel

If you have a Porsche dealer nearby, they sell it in the quart bottles for about $5. each. 0W-40 is the viscosity they primarily use in Europe these days. It meets the stricter ACEA A3 requirements.

2.7tDallas

you know her better than I do, but It sounds like a win-win for her if she just goes with the flow

captainbilly

The less viscous oil is not holding enough pressure so the oil light comes on? Is this what you are seeing, an oil light? If that is the case the heavier weight oil will help but it will still have trouble flowing when the car is cold. It would seem that a better solution would be to replace the sender with one that reads correctly so you don't get a light when the oil pressure is actually OK. Or if the problem is that the oil pressure really is too low then you need to find out why the pressure has dropped over the years. Could be a bad pump or badly worn bearings.

Does the problem show up at idle or while driving at normal speeds. If the problem is at idle then you almost surely have suffered a true loss of oil pressure which shows up the most when the oil pump is turning slowly. More viscouse oil will help this. If you see the oil light at higher speeds then I am less sure but maybe oil pump cavitation and oil starvation, not very likely.

Jon C

equivalent to a 5W non dino. Mobil, RedLine, Amsoil, have done studies on this.

I'd have no concern over a 15W synth in a turbo car for winter, though in colder climes I'd go with 10W.

I still am not sold on the idea of a 0W being a good thing if you want your engine to last, e.g., 200k miles.

Steve's 3.2 TT/Avant

This dealership is using dino 15W-40, not synth