mr kilmer reasonly i just bought it 2018 rav4 awd 20000miles . for my wife can i use 75w-90 syntheic 13$ in gear oil differential oil . 20000 miles instead of oem toyota gear oil 40$ or use red line better 75w-85 sythetic? better? thx
red line better 75w-85 sythetic? 20$ok?
Use whatever weight that your manual states.
red line better 75w-85 sythetic? 20$ok?
Use whatever gear oil (hypoid gear oil) of the correct weight is on sale.
When in doubt, I usually just go Toyota OEM, just to make it easy on my brain. But if you know what you are doing, you could figure out the correct gear oil and viscosity. It is not that often you change the gear oil, so OEM isn’t that outrageously priced with that respect.
My argument in such cases has always been that as an individual and not someone who is a mechanic and needs to make profit just go with OEM. Not saying something else wouldn't be okay, but usually the price difference isn't that much to be a deal breaker. Also, sometimes dealerships have sales on parts so it can even become cheaper.
