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MNBoxster · 04-25-2007, 10:56 PM

Hi,

You want to fill to the next to Top line.

Filling to the Top Line is an OVERFILL, and the only quantification is that it's 8 oz. over while in fact it could be much more overfull than that. The problem with this is that the Oil can Foam and experience compromised Flow and Heat carrying ability.

The entire Oil system requires 9.5 Qts. with a new Filter. The volume between Marks is about 8 oz. (or 1 Cup), so being down, even by as much as a quart isn't that significant. In Fact, the entire range on the Guage represents 1.5 Litres (or 1.6 US Qts.) so being down a quart is still in the OK Range.

Anything between the 2nd to Top mark and the 2nd to Bottom Mark is the OK range and that's exactly what it means - OK - no need to add.

If you add, you risk overfilling unless you add slowly, but preferably, pre-measure as the Gauge responds slowly to any added Oil, and overfilling is just too easy.

Too many Owners obsess about keeping it at the Top Line (or 2nd to Top Line) and inadvertently overfill the system which is much worse than the level being 1 or 2 Lines down...

Happy Motoring!... Jim'99

04-25-2007, 10:56 PM	#5
MNBoxster Registered User Join Date: Sep 2005 Location: Minneapolis/St. Paul, Minnesota, USA Posts: 3,308	Hi, You want to fill to the next to Top line. Filling to the Top Line is an OVERFILL, and the only quantification is that it's 8 oz. over while in fact it could be much more overfull than that. The problem with this is that the Oil can Foam and experience compromised Flow and Heat carrying ability. The entire Oil system requires 9.5 Qts. with a new Filter. The volume between Marks is about 8 oz. (or 1 Cup), so being down, even by as much as a quart isn't that significant. In Fact, the entire range on the Guage represents 1.5 Litres (or 1.6 US Qts.) so being down a quart is still in the OK Range. Anything between the 2nd to Top mark and the 2nd to Bottom Mark is the OK range and that's exactly what it means - OK - no need to add. If you add, you risk overfilling unless you add slowly, but preferably, pre-measure as the Gauge responds slowly to any added Oil, and overfilling is just too easy. Too many Owners obsess about keeping it at the Top Line (or 2nd to Top Line) and inadvertently overfill the system which is much worse than the level being 1 or 2 Lines down... Happy Motoring!... Jim'99 Last edited by MNBoxster; 04-26-2007 at 07:08 AM.