Thread: Engine Oil
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Old 09-09-2004   #43
A//// Guy
 
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Bloody Seal Bounce Champion!
Join Date: Oct 2003
Location: South Burbs
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There will still be oil leftover in the engine from brand A after a change. You switch to brand B and the oils might seperate and not flow together?? That would be my only concern. Like synthetic and then going to a regualr or vise versa. But I wouldnt think there would be enough oil seperation to cause any harm as oil will still flow no matter what.

Also switching back and forth could swell up your rubber seals throughout the engine because synthetic likes to seap through things because it is soo fine.
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