I have a 1994 Mazda B4000 4.0L OHV V6 with 237K miles on it. I’ve been using Valvoline 20W-50 Synthetic Blend. I’m considering moving to Conventional 20W-50. Should I stick to the Synthetic blend or move to Conventional? Will the Conventional oil not protect my engine enough?

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ScottyKilmer
ScottyKilmer

Editor

stick to what you've been using, switching often messes with engines, see that a lot.

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