@Ziemann , based on the comment of towing 3k lbs regularly, I would be inclined to go with 75w140, but get that it might be super sludgy for your cold climate. I bet @CarbonSteel could give you some insight. I went 75w110 but live in warmer climate and don't tow.
As far as those asking why, @MadMan4BamaNATL has the best answer. For those of us that are tougher on our vehicles and have the tools and knowledge to do this ourselves, its cheap insurance against a possible failure on the trail...a trail that may be far away from getting your standard roadside assistance help.
@tourproto , in regards to documentation of the benefits, I honestly could not say what is out there. With that said, you mention frequent oil changes to the engine. Changing these lubricants is exactly the same premise. Fresh fluids with fresh properties and removal of contaminants. Now is the value worth it to you? Maybe not if you are paying dealer cost ($700 as you mentioned), but would you have considered if it only cost you $75 and 2 hours of time?
Edit - Looks like @CarbonSteel already weighed in while I was typing slowly.
As far as those asking why, @MadMan4BamaNATL has the best answer. For those of us that are tougher on our vehicles and have the tools and knowledge to do this ourselves, its cheap insurance against a possible failure on the trail...a trail that may be far away from getting your standard roadside assistance help.
@tourproto , in regards to documentation of the benefits, I honestly could not say what is out there. With that said, you mention frequent oil changes to the engine. Changing these lubricants is exactly the same premise. Fresh fluids with fresh properties and removal of contaminants. Now is the value worth it to you? Maybe not if you are paying dealer cost ($700 as you mentioned), but would you have considered if it only cost you $75 and 2 hours of time?
Edit - Looks like @CarbonSteel already weighed in while I was typing slowly.
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