Changing Oil on Dry Sump Engine

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07-07-2010, 06:12 PM

#21

LMB-C6

Melting Slicks

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Location: Upstate New York

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Quote:

Originally Posted by NJLS708

I don't know if anyone does this when changing oil but I usually add half the new oil then start the engine for about 10 seconds then shut the engine off and add the rest of the oil. This way the oil pressure isn't through the roof on the first start after the oil change. This may be different with the dry sump but its just something I have always been used to doing.

Oil quantity has no effect on oil pressure (assuming the oil level is high enough to cover the pickup tube). If you see lower pressures it's because of oil starvation.

I do the exact opposite. I want the engine to spend as little time running without oil pressure as possible, so I pre-fill the filter so the engine doesn't wait for oil while the pump fills the filter. Sure, it's probably 1/2 second but I think it's worth doing..

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07-10-2010, 03:16 PM

#22

70goat

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Location: Edmonton Alberta

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My GS is showing 4500kms and 66% oil life....am resetting today as I am changing the oil (Mobil 1) on the GS (dry sump) and on my 70 Judge ( it gets Castrol)....The Firehawk also gets Mobil 1 and the race car (70 GTO ) runs Royal Purple...