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1989 Ford Mustang oil

Tiny
JIMGRUNGY
  • MEMBER
  • 1989 FORD MUSTANG
  • V8
  • 2WD
  • MANUAL
  • 48,000 MILES
What oil viscosity should I use in my car? It has about 35000 miles on it and I live in a cold climate. However, the car is stored in the winter. I've been hearing a lot about how 20w50 can add more protection, but have been hearing many different opinions. Which do you think is best for my Mustang which is driven in temperatures from 37 to 90 degrees.
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Monday, December 22nd, 2008 AT 2:11 PM

1 Reply

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
20w50? That wouldnt be good unless its constantly 100 degrees, that would be so thick during 30 degree weather that it would actually harm your vehicle due to little oil that would move around at that temperature.

For your temp range I suggest 10w30 or 5w30.
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Saturday, December 27th, 2008 AT 9:11 AM

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