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  1. J

    Castrol GTX classic vs Lucas oil hot rod

    That's what I'm thinking, I'm just curious on the differences in ppm of additive packs in the two oils, I'm sure the base oil will be the same
  2. J

    Castrol GTX classic vs Lucas oil hot rod

    It's for a 69 mgb, it takes 20w50
  3. J

    Castrol GTX classic vs Lucas oil hot rod

    @oil pan 4 190, +/- a few degrees
  4. J

    Castrol GTX classic vs Lucas oil hot rod

    Hey all, I know Lucas is not well regarded here but I'm curious if anyone has done an analysis on either of the above oils before use for a comparison.
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