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Registered
Join Date: Nov 2008
Location: Knoxville, TN
Posts: 100
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Thin oil...?
Quick question on the oil in a 1975 911S.
After taking her for a short ride this morning (I just picked her up on Wednesday, and it's been pouring rain till today) I decided I would check the oil since it would already be warm. When I pulled the dipstick out I noticed the oil was very clean but seemed thin, in other words if you held the stick up it would drip off very easy and faster than I would have expected......Thoughts? I had a PPI done last week and everything came back very good, Could the PO have just used thinner oil ? I am going to go ahead and change the oil today, what grade do you guys recommend. |
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12-14-2008, 08:26 AM
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Soldier of Fortune
Join Date: Aug 2008
Posts: 987
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Oil gets pretty thin when heated.
20w50 is what you want. Lighter if it's freezing in your area. |
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12-14-2008, 08:29 AM
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Registered
Join Date: Jan 2004
Location: Pittsford, NY
Posts: 3,701
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That thin oil could be full synthetic, which stays more 'thin' all the time as compared to natural oil. Did you get any records with the car and do you know if it has been given synthetic oil? Under normal highway driving conditions, what sort of pressure are you reading on the gauge? Does it correspond roughly with the rpm's; meaning cruising along in 5th with revs about 4k, does your pressure read around 4? At idle it should drop to just under 1.
For winter temps you have, you might want to leave that oil in and get some 20-50 Brad Penn for the summer. (unless you can confirm you have a good synthetic in the correct range viscosity, in which case I'd leave it if your not leaking on the driveway or garage floor). EDIT.. some light reading for you: Ultimate Motor Oil Thread or Why we hate CJ4/SM oils
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Tony G 2000 Boxster S Last edited by tonythetarga; 12-14-2008 at 10:15 AM.. |
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12-14-2008, 09:53 AM
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