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Synthetic Oil in older tractors?

39003 Views 32 Replies 15 Participants Last post by  gaheard52
So I have started a side business of working on and restoring older tractors. I have put up some pictures on here in my gallery of one of them. I am getting a lot of people who want thier oil changed over to synthetic. Is it OK to run synthetic in a 4020 or 3020? Some people say it shrinks the seals, others say it will leak because its so much thinner. Other say its a myth. I would really like a good answer I can give my clients an feel confident that I am telling them the truth?
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Don't worry about opening a can of worms, people on this forum seem to like worms:laugh:
Yup, we're all adults here and can have a good conversation. That includes disagreements and differences in opinion, but our members don't let it get personal. :thumbup1gif:
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