Synthetic Oil
12-01-2009, 01:41 PM
#21
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Join Date: 10-21-2008
Location: hemet, calif.
Posts: 1,831
syn. oil
in 1956 bought new 56 porsche speedster the first syn, oil was Steinoil was clear and smelled like nitro have used only syn. every since why take a chance cost is very little when compared to the benefit.
should read Stein C made in Salt Lake, Utah.
should read Stein C made in Salt Lake, Utah.
Last edited by jay loukakis; 12-01-2009 at 01:43 PM. Reason: addition
08-03-2010, 09:58 PM
#24
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Join Date: 06-20-2010
Location: Roseville, MI
Posts: 80
but going the other way, putting synthetic into a high mile engine that has only had dino in it, could cause seal failure and oil might get by the piston rings.
08-03-2010, 10:47 PM
#25
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08-04-2010, 08:22 AM
#26
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Join Date: 01-13-2006
Location: Superior, WI - Over the Hill Warranty Club member
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Valvoline SynPower 5w-30 In the Deer Slayer.
One point to remember is your oil needs to be cleaned, so I change my filter every 3000 - 3500 miles. The easy access and the fact that you can change your filter with very minimum oil loss helps.
One point to remember is your oil needs to be cleaned, so I change my filter every 3000 - 3500 miles. The easy access and the fact that you can change your filter with very minimum oil loss helps.
08-04-2010, 09:09 AM
#27
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Join Date: 01-10-2008
Location: NJ
Posts: 681
The "seal failure" that some have experienced in switching to synthetic oil comes from synthetic oil's cleaning properties, which clean off varnish deposits. Many times these varnish deposits are the only thing keeping an old seal from leaking, acting as a labyrinth seal. The seal was well on it's way to failure.
08-05-2010, 11:41 PM
#29
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08-06-2010, 05:46 AM
#30
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Join Date: 07-05-2008
Location: Akron Ohio
Posts: 5,464
Generally the molecules in s syn oil are smaller and may leak on older engines. Front seal on Chevy Rear main on Pontiac etc.
Most older engines had leak prone places to start but the smaller molecules help it leak a little more in some cases.
It is usually not enough to hurt anything but can happen.
Most modern engines today are better sealed and this is no longer an issue on most new cars.
Most older engines had leak prone places to start but the smaller molecules help it leak a little more in some cases.
It is usually not enough to hurt anything but can happen.
Most modern engines today are better sealed and this is no longer an issue on most new cars.