A 75W-90 is fine, but I wouldn't venture much above a 75W-90. A 75W-110 is the highest I would go. Above that, you start building a lot of heat.
Why oh why do they do this? 75w85 recommended but not popular on the shelf.
- Thread starter Fishstyx
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It's not that difficult to source 75W85. There are at least 6 different brands outside of OEM. Castrol Syntrans or Fuchs Titan Sintopoid are the ones I'd go for. |
When you look at the viscosity specs these oils are not much thinner than 75W90 so there can be little advantage in fuel economy and little to lose if 75W90 is chosen.
When you look at the viscosity specs these oils are not much thinner than 75W90 so there can be little advantage in fuel economy and little to lose if 75W90 is chosen.
Two OReillys had it in Redline which surprised me. Probably should of grabbed one for the BMW.
Thanks
Make sure it's GL-5 for your diffs and you will be fine.
I run Valvoline 75w 90 in a Toyota that calls for 75w 85. I run it in my Gm front diff that calls for 80w 90 also.
My gm 10 bolt calls for 75w 90.
I agree 75w85 is more for fuel economy. In your vehicle, I would use the ubiquitous 75w90 grade, w140 if you tow
CleanSump
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There is a legitimate need; The legitimate need is for the OEM to make the highest MPG they can in the Fleet Mileage Test.
Sure they want you to buy their oil, but thinking they picked 75W-85 to make you go to the dealer is naive.
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75w90 should be fine. When I’ve spoked to Toyota dealers, they utilize either 75w90 or 80w90 when servicing diffs calling out 75w85.
Good to know
I guess it’s like how Ram recommends 10W30 but the factory fill is 5W40 the only reason is to squeeze out an extra 1tenth of a mile per gallon using 10w30
Yes yes. I just filled my 2023 Tacoma with the 75-85. Time to Roll On!
Yes it’s part of the entire EPA certification for fuel consumption. A 75W-90 is more than fine in the vehicle. Better even.
I would argue that CAFE standards are only part of the reason.
I did a 15K service in the Tundra with Amsoil Severe Gear 75W90.
What do you think is the other part?
Trying to sell their own oils more, because 75w85 isn’t all that prevalent. The OEMs are taking the whole picture into account. Do they need to squeeze every 0.1mpg due to CAFE? Yes. Do they also want to make as many people as possible use their OEM parts and fluids? Absolutely.
Using HPL 75W-85 Differential Life in the Ram’s front pumpkin and HPL 75W-90 Differential Life in the rear differential housing.
Very smooth and quiet operation. All PAO and mPAO for 100,000+ miles (if one wants to never change the differential fluid ever again
). I swap mine out every 30,000 miles on average.
The Differential Life products do come with a screw on cone “applicator tip” (think tips on a ketchup or mustard squeeze bottle) that is very easy to “pressure squeeze” the fluid into the fill ports. Very easy to use the product container.
Very smooth and quiet operation. All PAO and mPAO for 100,000+ miles (if one wants to never change the differential fluid ever again
). I swap mine out every 30,000 miles on average.The Differential Life products do come with a screw on cone “applicator tip” (think tips on a ketchup or mustard squeeze bottle) that is very easy to “pressure squeeze” the fluid into the fill ports. Very easy to use the product container.
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80w140 synthetic works for me and is readily available.
Perhaps. But part of the EPA requirements is that the manufacturer must ensure that the oil grade used in testing must be made available, so the manufacturer must sell it. I’ve never had a dealer push their fluids at a Toyota nor a VW dealer so I personally doubt they are just trying to make a buck.
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