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Oil?

Eric
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Eric Member

Eric

Posted
Posted

I've used 10-40 syn since I owned the car 99 911 996 but just put 15-50 syn in. The car seems to run rough. Any input? The weather is about 80F.

Thanks, Eric

1999Porsche911 Member

1999Porsche911

Posted
Posted (edited)
I've used 10-40 syn since I owned the car 99 911 996 but just put 15-50 syn in. The car seems to run rough. Any input? The weather is about 80F.

Thanks, Eric

When is it running rough? On a cold engine, when fully warmed up, idling, cruising, all the above? Make sure dip stick and oil cap are on tight.

Edited by 1999Porsche911
Eric Member

Eric

Posted
  • Author
Posted

I've used 10-40 syn since I owned the car 99 911 996 but just put 15-50 syn in. The car seems to run rough. Any input? The weather is about 80F.

Thanks, Eric

When is it running rough? On a cold engine, when fully warmed up, idling, cruising, all the above? Make sure dip stick and oil cap are on tight.

Idling. The dip and cap are on tight.

nycebo Member

nycebo

Posted
Posted

As a frame of reference, I am running 15W-50 currently is colder temperatures than you (I live in NYC) and have NOT noticed any problem with a rough idle. Does it idle roughly on cold start or when warmed up, or both?

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