I agree 100%. My last two cars/trucks called for 75w85 and I put 75w90 in both...no issues whatsoever. Actually, that was the least of my problems.75w90 is easier to find at a good price. There is nothing wrong with using 75w90
Also, most people never change the gear oil in the diff, and they alsmost never have problems. They go to the junkyard on the factory fill
That's what I figured.85 is more a fuel economy spec. 90 will make no difference.
You likely can run the original gear oil a very long time without any problems. The changing of the gear oil probably isn't even mentioned in the maintenance manual for normal service.So we have 2019 santa fe AWD, oem.is 75w-85 usually our other cars have used a 90 weight.
My question is......did they chose an 85 weight for meg's or longevity?
We want to keep this car a LONG time.
Would you swap it out for a 90?
So we have 2019 santa fe AWD, oem.is 75w-85 usually our other cars have used a 90 weight.
My question is......did they chose an 85 weight for meg's or longevity?
We want to keep this car a LONG time.
Would you swap it out for a 90?
Thanks y'all.
I'm going with 75w-90
i checked there oil analysis 75w85 has a lot of phosphorus https://www.oil-club.ru/forum/topic...-85-api-gl-5-08885-02506-zhestebanka-svezhee/As far as I know, all the 75W-85 products are non-sulfur/phos chemistry, so shifting is easier and synchronizers last longer. Most (not all) 75W-90 are sulfur/phos.
I drained the standard whatever came in a Chinese van and put in the new chemistry 75W-85 and changed the entire shifting characteristics, so have been doing that for customers for several years now.