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Oil Type
My 83SC has 183K miles and I have been using Valvoline 20-50 oil as recommended by my mechanic. I have just seen an ad by Valvoline for a new oil that will refresh seals. Has anyone thought about this for high mileage engines? I know additives are not recommened and I have not used any. Just thought this might be better since it is an oil or would it be the same as putting an additive to existing oil?
TIA
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Bill 98 Ocean Blue Boxster red911 |
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10-28-2002, 10:53 AM
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Information Junky
Join Date: Mar 2001
Location: an island, upper left coast, USA
Posts: 73,167
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Most all motor oils have additives for seal protection. If what you are using works, why fix it?
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Everyone you meet knows something you don't. - - - and a whole bunch of crap that is wrong. Disclaimer: the above was 2¢ worth. More information is available as my professional opinion, which is provided for an exorbitant fee. 
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10-28-2002, 11:06 AM
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Information Junky
Join Date: Mar 2001
Location: an island, upper left coast, USA
Posts: 73,167
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Let me re-phrase that;
. . .seals are made from elastomers. Not everyone uses the same recipe for their elastomeric seals. Also, not every one uses the same recipe for their oil additives. So your 83SC w/ 183K miles, using Valvoline 20-50 . . it sounds like you already have a good match. (your seals havn't turned to bubble-gum nor shrunken rock)
__________________
Everyone you meet knows something you don't. - - - and a whole bunch of crap that is wrong. Disclaimer: the above was 2¢ worth. More information is available as my professional opinion, which is provided for an exorbitant fee.
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10-28-2002, 11:17 AM
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I was just looking at an oil leak that seems to be coming from #4 head. I do know I probably have an intermediate shaft cover o- ring leak also but will be fixing that soon.
Thanks Dr. Island
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Bill 98 Ocean Blue Boxster red911 |
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10-28-2002, 12:23 PM
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Information Junky
Join Date: Mar 2001
Location: an island, upper left coast, USA
Posts: 73,167
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You may want to check your lower headstuds. SC's with snapped studs can lead to a small oil leak.
__________________
Everyone you meet knows something you don't. - - - and a whole bunch of crap that is wrong. Disclaimer: the above was 2¢ worth. More information is available as my professional opinion, which is provided for an exorbitant fee.
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10-28-2002, 01:37 PM
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1983 Porsche 911SC Targa 3.0L 
