0W-40 in PUG 3.6

[Gvsukids]

So, @ShadowsPapa what oil should I run if I off-road multiple times a month?

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[ShadowsPapa]

So, @ShadowsPapa what oil should I run if I off-road multiple times a month?

Michigan - the dunes?

 

[Wildtoad]

I just love oil threads!

 

[ShadowsPapa]

I just love oil threads!

Pretty slick, aren't they...........

 

[Gvsukids]

Michigan - the dunes?

Yes, sometimes the dunes. Often we're on the woods and towing a boat.

 

[ShadowsPapa]

Yes, sometimes the dunes. Often we're on the woods and towing a boat.

I'd personally run it by the book. Thousands of others do.
IF I were so inclined to run a heavier oil and run at extreme angles in rocks, ravines, where there's a heck of an angle on the engine, because the oil will flow more slowly back to the sump, I'd add a half quart. But I've witnessed heavy oil not flowing back to the pan causing oil pressure to quiver or drop at angles due to oil drain-back issues in the past. These have small sumps.

 

[Stan H]

I'd personally run it by the book. Thousands of others do.
IF I were so inclined to run a heavier oil and run at extreme angles in rocks, ravines, where there's a heck of an angle on the engine, because the oil will flow more slowly back to the sump, I'd add a half quart. But I've witnessed heavy oil not flowing back to the pan causing oil pressure to quiver or drop at angles due to oil drain-back issues in the past. These have small sumps.

I run Steep angles 15% and up and I have a little extra in mine for that very reason . Because alot of time Im having to stay on it while pulling steep . But I am using 0W-20 always have .

 

[ShadowsPapa]

I run Steep angles 15% and up and I have a little extra in mine for that very reason . Because alot of time Im having to stay on it while pulling steep . But I am using 0W-20 always have .

Just guessing based on observing some of your posts, comments with the wild hobo man and so on, I'll "assume" you do some fairly hefty off-road stuff, some angles, rocks, and such.
And gee, your engine is alive.

 

[JT1]

Ambient temperatures don't matter, really? Have you checked your oil temp in the winter? When was the last time you saw 240 degrees in the winter?

I've never seen 240* in the summer. Even after crawling for hours in 4L at 4mph. Mine is a manual, so maybe the trans cooler on the automatics makes a difference?

I've seen coolant temps in the low 230*s but the oil stays below 220.

 

[Deleted member 66831]

That's really funny - more valvetrain protection, when in fact, it's likely LESS.
I guess you haven't followed any of the other threads, the videos and so on, and the post I made where I showed people running heavier oils suffered cam destruction.
Viscosity doesn't protect, and in fact, in this case due to the likelihood of less oil spray reaching critical parts may actually do long-term harm.

Sorry, it's not better for valvetrain protection. If flat tappet cams of the past could last perfectly fine with much higher spring pressures with 30 weight oil, why would you think 40 would be better?
Again, viscosity doesn't protect. Do some reading of the many many threads on the topic here.

Do what you want, but it's not going to help.

Thanks for posting this info again. Newer members like me haven’t seen the “back and forth” and filtering for the reality of the matter is daunting. I had jeeps my whole life almost and used what they recommended. I’m glad I’ve kept the faith. Your response was helpful. Thanks again.

 

[Stan H]

Just guessing based on observing some of your posts, comments with the wild hobo man and so on, I'll "assume" you do some fairly hefty off-road stuff, some angles, rocks, and such.
And gee, your engine is alive.

Yes I most certainly do , ironic isnt it .. I use the correct oil viscosity recommended and it works who'd a ever thunk it

 

[Q Tip]

Many years ago I asked my now departed legendary neighborhood mechanic which oil i should use for my brand shiny new Murray lawn tractor. Without raising up from his stooped position elbows deep in a Chrysler K car (turbo power!), he opined, "son, if there was a recommended viscosity oil for jacking your dick...wouldn't you use it??". Never forgot that.

 

[ShadowsPapa]

Many years ago I asked my now departed legendary neighborhood mechanic which oil i should use for my brand shiny new Murray lawn tractor. Without raising up from his stooped position elbows deep in a Chrysler K car (turbo power!), he opined, "son, if there was a recommended viscosity oil for jacking your dick...wouldn't you use it??". Never forgot that.

I still have all of the Briggs, Tecumseh/Power Products, Jacobsen and other power equipment parts manuals and repair manuals, warranty sheets and so on left over from when I ran a shop at age 15-16. Why? Good grief, don't ask an ADHD person why they do or keep anything. You'll get a very definite - I have no idea!
You really triggered those old memories mentioning Murray lawn equipment. Those things popped up everywhere and helped kill the company my father worked for. (change with the times or die)

 

[gatorboy]

I still have all of the Briggs, Tecumseh/Power Products, Jacobsen and other power equipment parts manuals and repair manuals, warranty sheets and so on left over from when I ran a shop at age 15-16. Why? Good grief, don't ask an ADHD person why they do or keep anything. You'll get a very definite - I have no idea!
You really triggered those old memories mentioning Murray lawn equipment. Those things popped up everywhere and helped kill the company my father worked for. (change with the times or die)

After reading all 7 pages of this thread, I think Shadows Papa makes good sense through experience and facts. I do fairly easy driving, with the worst being towing an airboat in Florida ,which the ones of you that have, know it creates wind resistance due to the cage. I planned on staying with 0w/20, and now I’m sure. The only thing different I’ll do, is switch to Amsoil, just because.

 

[Sot]

Howdy!
What could go wrong? At 15.7 cSt it's almost double the KV100 of a typical 0W-20.
Thanks!

Some say that heavy weight can be to much for the lifters. We all know oil is oil. It's also a matter of all the crazy additives they put in them. Oil never breaks down only the additives. That's why oil can be recycled.

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