So I have a 03 S10 4.3 125,000 miles, transmission fluid may or may not have been changed in it's life, it still has a red/pink color to it and does not smell burned and drives great.
I was going to go with Valvoline Dex/Merc (Dexron III) but I do not know the history of the vehicle on if it has been serviced before and if so which fluid was used so I figured I would go with the GM recommended Dexron VI just in case it has been serviced before and they ended up using that.
O'reilly's sells their brand which also claims to be used where Dexron II, III, VI, Toyota WS, Toyota T-IV is specified it also says it is "officially licensed and GM approved Dexron VI"
So has anyone had good luck with O'reilly's Dexron VI and what about in older higher mileage 4L60E transmissions like mine for a simple filter change and drain/fill?
I was going to go with Valvoline Dex/Merc (Dexron III) but I do not know the history of the vehicle on if it has been serviced before and if so which fluid was used so I figured I would go with the GM recommended Dexron VI just in case it has been serviced before and they ended up using that.
O'reilly's sells their brand which also claims to be used where Dexron II, III, VI, Toyota WS, Toyota T-IV is specified it also says it is "officially licensed and GM approved Dexron VI"
So has anyone had good luck with O'reilly's Dexron VI and what about in older higher mileage 4L60E transmissions like mine for a simple filter change and drain/fill?