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Ralph S. · 10-20-2018, 08:38 AM

Hello everyone
I know this subject has been covered but I would like some advice. I'm getting ready to change the oil out in gear box and rear. I narrowed the oil choice to Sta Lube Gl4. Not sure whether I should use 80W90 or 140. After driving the car a bit I did notice it has a hard time shifting into 1st once warmed up. Due to that I'm thinking 140 might be a better choice. Do you agree? I'm still trying to figure out the car and what works and what doesn't.

10-20-2018, 08:38 AM	#1
Ralph S. Member Join Date: Oct 2018 Location: Pe Ell, WA Posts: 32	41 coupe transmission and gear oil Hello everyone I know this subject has been covered but I would like some advice. I'm getting ready to change the oil out in gear box and rear. I narrowed the oil choice to Sta Lube Gl4. Not sure whether I should use 80W90 or 140. After driving the car a bit I did notice it has a hard time shifting into 1st once warmed up. Due to that I'm thinking 140 might be a better choice. Do you agree? I'm still trying to figure out the car and what works and what doesn't.