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Q:

RECOMMENDED OIL WEIGHT on 1998 Nissan Altima

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MY 98 NISSAN ALTIMA IS GETTING A replacement with a 78000 MILE ENGINE. MECHANIC IS PLANNING ON PUTTING IN 20/50 OIL VERSUS 30? my bad engine had that heavy weight because it was worn out. WHY would he make choice for such heavy weight? I LIVE IN FLORIDA AND HE CLAIMS ITS BETTER BUT?????
(2) Answers
(2) Comments
go with the recommened oil weight from nissan - should be 5-30 or 10-30.i would also use castrol gtx or castrol high mile oil.
20W50 is too much for that engine. Even in FL 10W40 is enough for your Nissan.
Use a good quality oil, like Pennzoil and replace it every 3K miles.

Zee