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  1. J

    Oil recommendation needed for mail carrier Buick

    Originally Posted By: hpb With the constant stop start, it's the auto trans I'd be most concerned about. Engine really won't care too much. This is a concern that I'm already investigating. This transmission needs a shift kit job. This is largely why I intend to use Lubegard. However, none of...
  2. J

    Oil recommendation needed for mail carrier Buick

    Originally Posted By: mattwithcats First thing, see if an oversized oil filter will fit. OEM is a 3387A, 3 and a third inches long. Oversize is 3980, just under 5 inches long ... Second, use a better filter, Purolator PureOne, NAPA Gold, Fram Ultra, etc.., Third, keep the tires inflated. I...
  3. J

    Oil recommendation needed for mail carrier Buick

    Originally Posted By: Burt Mail carrier has a 740il? Hmmm.... Used to. A 2000. At about 100k everything started to fall apart and the parts cost and labor involved was too much.
  4. J

    Oil recommendation needed for mail carrier Buick

    I was thinking along the lines of a mail delivery vehicle needing different oil than a commuter on the highway. Of the major brands, who has the best oil for this application? Would a thicker oil be advisable? I'm not concerned about efficiency and I've read that European and Australian markets...
  5. J

    Oil recommendation needed for mail carrier Buick

    2006 Buick Lucerne 3.8L V6 (GM 3800 series III) 123,000 miles Manual recommends 5W-30. Location: North Carolina I bought this vehicle recently and haven't changed the oil in it yet. Being that it sees frequent, repeated acceleration followed by idling when I deliver mail, I figure I need a...
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