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I'm just about to change the oil in both Amazons and this seems like a good time to change brands if required. I have been using CASTROL GTX with 20% Lucas oil stabilizer. I looked for ZDDP in the tech sheets that Castrol has posted on line. There doesn't seem to be anything about it or a list of ingredients at all for that matter. This particular oil seems conspicuously absent from the discussion. Does anyone have any information on it?
No Lordcos here, but Valvoline is probably available-I'll look for it while I await comments. Thanks.
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