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Thread: Regular maintenance for 1998 GMC 3500 6.5l

  1. #1
    Join Date
    Mar 2013
    Location
    garden grove
    Posts
    1

    Default Regular maintenance for 1998 GMC 3500 6.5l

    i just purchased my new 98 gmc 3500 6.5l diesel

    i'm new with the diesel engine, and it would be great if someone would help me.
    what type of oil should i use and how much will i need, what type of oil filter will i need. and what other fluids should i change. and what else should i maintain in a diesel truck?

  2. #2
    Join Date
    Feb 2000
    Location
    Montana
    Posts
    11,380

    Arrow

    Use an API certified/rated motor oil with a CI or CJ rating. For petroleum oils, Shell Rotella T 15W-40 and Chevron Delo 15W-40 are popular choices - there are others. For a synthetic, Mobil Delvac or Shell 5W-40.

    Use AC Delco oil filters, and change both the oil and filters on a 3K interval.

    Jim

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