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Recommended Posts

Posted

I recently changed my oil in my 996 tt. I drained both the engine and the reservoir (not the turbos) after warming up the engine.  I bought two 5qt bottles of Mobil 1, poured one quart into a one quart container and put the rest in the car.  I warmed up the car and checked the oil level, and the indicator is solid.  Any thoughts on whether this is only a half quart high, or could this be more?  I can live with the half a quart, but I don't know how this could be much more than that? 

  • Admin
Posted

There is no warning once you pass the full mark. It certainly could be overfilled.

I would drain at least half a quart and see what displays then. I like to keep mine one bar below the full mark.

  • Moderators
Posted

Problem is that when the level indicator pegs, you have no idea how over filled it is; could be just a small amount, or a lot.  When we do an oil change on one of these cars, we purposely short fill the system, check it after running the car for a short period, then top up with a target of being around one bar short of full:

 

 

pic14.jpg

 

I would suggest that you are probably not too far overfilled, but you can drain a small amount out (use the turbo reservoir), restart the car, and then check the level.

Posted

7.8 quarts are needed for initial filling. This is from the 996TT workshop manual.

I would drain the engine and refill slowly.

Posted

Um...this is what I have in the workshop manual:

Engine oil quantity Approx. 12.5 (2.71)

change quantity 8.5

(1.84)

with filter change 8.75

(1.90)

Posted

This is why I'll add the GT2 dipstick option if my car's engine ever needs to come out to have the water pipe fittings welded.  I dislike the electronic engine oil level and hate to say I don't trust it, either.   But as others above have stated, underfill slightly when doing the oil and filter, and then gradually top it up until the indicator shows it's at the correct level.+

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