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Bought a used 6.2 - What maintenance should be done?

Discussion in '1982-Present GM Diesel' started by Terry, Feb 24, 2002.

  1. Terry

    Terry Registered Member

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    I just bought a 91 Chevy Silverado 4x4, 6.2 with 130,000 miles on the OD. I am new to diesel ownership.

    The truck is in very nice shape but I do not know the maintenance history.

    What maintenance items should I do immediately?

    What is a normal maintenance schedule after the initial maintenance?

    I replaced all of the GP's with 60G's but have done nothing else yet.
     
  2. 6.2L Jimmy

    6.2L Jimmy 1/2 ton status

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    Use ROTELLA T oil 15w40 bought at shell service-stations.
    Get a K&N air filter. The more you change your oil the better.
    Use STANADYNE PERFORMANCE FORMULA in the fuel all year round (swear by it).
    Hope this helps,
    Mike

    1989 GMC Jimmy 6.2L 4x4,1969 Camaro Z/28 502 C.I. B.B.C.
    BLOOD,SWEAT AND GEARS!
     
  3. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    To add to the above, I would change out your fuel filter ASAP.

    I've never used Rotella brand oil before, but you could also use GM 15w40 or Pennzoil 15w40. Both ranked really high on a protection/durability test that was floating around here a while back. Although Jimmy 6.2s point about frequent oil changes has merit, you should expect to change your oil every 2500 miles at the maximum.

    Use a quality diesel fuel conditioner(like Stanadyne) to counteract the drying effect of low-sulphur fuel and make sure whatever air filter you use is kept very clean. Diesels need lots of air to run properly.

    That only covers the diesel part of the truck. Any new-to-me vehicle gets the fluids swapped out(diffs and transfer case) and the tranny serviced. You should also check your cooling system and make sure the coolant is up to snuff. Get under the truck and make sure all the grease points have been serviced recently. This is also a good opportunity to look for leaks.

    Good luck with your new truck, brother[​IMG]!!!





    <font color=red>DIGGING AND DIGGING AND DIGGING</font color=red>
     
  4. Danno

    Danno 1/2 ton status

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    Previous owner of my K5 ran Shell Rotella the whole time he had it.

    I switched the truck over to Valvoline Super Blue 2000 (partial synthetic, rated for use in heavy diesels) 15w-40, and instantly noticed that the truck seemed to want to rotate quicker during startup, and rattled less right after starting.

    I like the stuff. Engine is all original w/over 200,000 miles on it. Uses about half a quart of oil every 1000 miles or so.

    1984 K5 Blazer 4x4 Silverado
    6.2L diesel, 700R4, 3.42 gears, 31x10.5" tires
     
  5. Terry

    Terry Registered Member

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    Thanks for all the replys.

    What about engine coolant. What is recommended?
     
  6. Danno

    Danno 1/2 ton status

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    You know, I don't even know what I'm running in my truck right now. I don't have a garage (live in an apartment) so I take the truck to a Valvoline service station to get oil and other fluids changed. I'm running whatever they put in when I had the system flushed this past fall.

    I've got a 180F thermostat, stock fan, stock radiator, and run between 180F and 200F in city, open road, or in the mountians up some nice inclines. I'm happy so far.

    1984 K5 Blazer 4x4 Silverado
    6.2L diesel, 700R4, 3.42 gears, 31x10.5" tires
     
  7. Guest66

    Guest66 Registered Member

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    i either use some type of prestone coolant or some Mercedes Brand heavy duty coolant i get from my german mechanic
     

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