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Oil Recommendation

11-01-2012, 08:43 PM
We just bought a 2000 Explorer Limited with the 4.0. It has 102K miles on it, and I would love to switch to full synthetic oil. It this OK to do, or would semi-synthetic or high mileage oil be better? Do I still need to use 5W20 (we live in Michigan with fairly cold winters).

11-01-2012, 10:02 PM
You should have no issues switching to synthetic, unless there are issues about to present themselves anyway. Stick with the recommended viscosity, which you've apparently already identified as 5W20.


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