My 1992 400E has 63K. I will be using synthetic oil and will be changing the oil very soon. I live in Indiana where I will be driving the car during the winter. What weight of oil is best. Further, are there any details and/or tricks I should know when changing the oil. Any help is appreciated. Thank you. Jim.

I'd run 15W-50 now, and if it's a really cold winter go to 10W-30. I run 15W-50 Mobil1 in my 500E year-round.

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All the best, Michael
500E
300TE

middle Ga., USA
you can use 20W-50 year round.
engatwork