Transmission Treatment do or don't
I have a 65 coupe with auto transmission. He drives great on open road but low gears id doesnt like to shift out of. Some mentioned I may have a vac line leak but I do not see anytjing obvious. Do you think that that Slick 50 automatic transmission treatment would be worth adding? It says it Improves shifting, reduces heat, reduces leaks, and maintains viscosity.
also what do you think it would cost to have the vac line tested?
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