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Engine & Gearbox Oil

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PeterB

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I am looking at replacing the oil in the engine and gearbox of my BJ7. I have read alot of posts about using either Castrol GTX 20-50 or Valvoline VR-1 50 I see a lot of the posts are from warmer climates. Up here in Maine would you use the same?
 
Both work fine overhere ;-)

Hans
 
Yes but IMOP VR1 is a better choice
 
Why not use 30 wt. non-detergent as manual recommends in transmission. Castrol 20w50 in engine. It's what I use in Michigan for 30 years.
 
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