Hi, I would like to know if I can use fully synthetic oil in my car it will be its first oil change by me and the previous owner didnt know much about it. Thanks
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Monday, June 2nd, 2014 AT 8:16 AM
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ASEMASTER6371
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Yes, you can use that oil. It is not a good idea to change back and forth. If you change stay with it
Roy
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Monday, June 2nd, 2014 AT 8:52 AM
ADAM034
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Okay thanks also there is a yellow gunk on the radiator cap but not on the oil cap or the dip stick the revs seem to twitch every now and then when at idle, is this a failed head gasket?