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Oil pressure vs gas octane question
My oil pressure is lower (30 psi) at cruising speeds when I use 87 octane than when I'm running 91 or 94 octane (40 psi). Does this make sense?
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'77 911S sold in 2006 '79 911SC in 2009  Saskatoon Sports Car Club http://www.ssccracing.org/ |
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09-01-2005, 05:09 PM
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Location: Wilmington, NC USA
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No!
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69 911 2.3Ez 85 928S |
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09-01-2005, 06:29 PM
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Not at all. You forgot how much hotter it was on the day you were using 87.
ianc
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BMW 135i. Nice. Fast. But no 911... "I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79 |
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09-01-2005, 06:47 PM
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Also, doesn't low octane fuel make the car run hotter (especially if the spark is retarded) -- all other things being equal. I know that my oil temperatures went up by about 10 degrees on average when I retarded my spark so that my engine could use 93 octane. This might account for some of the change, along with the weather.
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John '69 911E "It's a poor craftsman who blames their tools" -- Unknown "Any suspension -- no matter how poorly designed -- can be made to work reasonably well if you just stop it from moving." -- Colin Chapman |
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09-02-2005, 03:01 AM
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Nope, not that either, provided both can run the same timing and there's no detonation happening...
ianc
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BMW 135i. Nice. Fast. But no 911... "I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79 |
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09-02-2005, 08:12 AM
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1977 Porsche 911S 2.7
Porsche 911 SC
1969 Porsche 911E 2.0 E
