Stop in for a cup of coffee

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Mattax said:
90 was the factory for over 10*F, so 75W-90 would probably be the best modern equivalent.
Might see what Dr Diff or some others have to say but the 140 seems really high viscosity in comparison.
As a tribute car it has to do street and strip, and I assume your not tearing down after every event or two. That's one aspect about engine racing oils people seem to ignore when they use them on the street.
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Yep. A highly quality street synthetic for me
 
Mattax said:
90 was the factory for over 10*F, so 75W-90 would probably be the best modern equivalent.
Might see what Dr Diff or some others have to say but the 140 seems really high viscosity in comparison.
As a tribute car it has to do street and strip, and I assume your not tearing down after every event or two. That's one aspect about engine racing oils people seem to ignore when they use them on the street.
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Thanks!
 
dukeboy_318 said:
Yeah email Cass at dr diff. Cass is THE subject matter expert. No offense to Matt as mat is very knowledgeable as well. But Cass has been dealing with these things on a daily basis and that’s why he’s Dr Diff. Outside of this forum , he’s one of the very few I’d trust in anything Mopar
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Also about whether the GL4 or 5 is appropriate. It looks like GL5 was the spec, at least without suregrip.
You could also email Widman. While unlikely to have experience with the DANA rear behind a hemi, the Dana Powerlok (suregrip) was widely used, and he's seen lot and lots of stuff torn down and examined. Being in Bolivia he has nothing to sell. He's just posting info in English to be helpful to the old car community.
 
Mattax said:
Also about whether the GL4 or 5 is appropriate. It looks like GL5 was the spec, at least without suregrip.
You could also email Widman. While unlikely to have experience with the DANA rear behind a hemi, the Dana Powerlok (suregrip) was widely used, and he's seen lot and lots of stuff torn down and examined. Being in Bolivia he has nothing to sell. He's just posting info in English to be helpful to the old car community.
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Thanks I emailed Dr Diff.
 
FYI, Hoosier is stepping up. They are making more next week and going to help me out. Very nice guy I talked with today.
 
My Super Duty calls out 85/140 for diff lube. I use that in that truck and typical 80/90 in cars
 
nice, transmount just showed up... Made in india.. which makes me happy so i know edelbrock didn't touch it.. it might fit :)
 
Icetech said:
Quick question... when i was power washing i popped my core plugs out and was surprised how much garbage i cleaned out of my water jackets...got new brass plugs to put in, is indian head ok on those or should i use something else?
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Yes, use Indian Head Shellac or number two permatex which is not hardening..
 
Mattax said:
Also about whether the GL4 or 5 is appropriate. It looks like GL5 was the spec, at least without suregrip.
You could also email Widman. While unlikely to have experience with the DANA rear behind a hemi, the Dana Powerlok (suregrip) was widely used, and he's seen lot and lots of stuff torn down and examined. Being in Bolivia he has nothing to sell. He's just posting info in English to be helpful to the old car community.
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Cass recommended conventional 85 140
 
Morning fellers, our Mopar show was a rain out. They are looking for a makeup date for now. Weather guessers are calling for rain all week.
I ran 75w-90 synthetic when I was running Super Stock way back when.

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ZMan67S said:
Morning warmer here this week mid 80's. Long weekend playing golf flat wore me out playing nine hours a day.
Cheryl and I played nine yesterday and then went and floated in the pool for an hour or so. Went home and did nothing!!
Going to do some watering this morning and cut some brush down in the trees. Plenty of shade so won't be too bad.
Need to get the Barracuda advertised this week. @MOPARMITCH what web site did you use when you sold yours??
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Look into Bring a trailer, lots of high-end cars on there.
 
Just got home from taking my stepdaughter to Annapolis to the social security office to sign her up for social security card. Much less hassle than I expected. You show up, you take a number, wait maybe 20 minutes. Bam, done. They will mail it in 2 weeks.
 
Maxcustody said:
Plenty of guys running synthetic, then others say no in vintage sure grip that it is too slippery….. :wtf: :BangHead:
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I always like to run nonsynthetic stuff in my old hot rods. On the newer stuff that they recommend it, okay I'll use it
 
Maxcustody said:
Cass recommended conventional 85 140
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Guess I'd want to k now why.
Especially when when a guy like jaws running SS was running 90

jaws said:
Morning fellers, our Mopar show was a rain out. They are looking for a makeup date for now. Weather guessers are calling for rain all week.
I ran 75w-90 synthetic when I was running Super Stock way back when.

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Maxcustody said:
Plenty of guys running synthetic, then others say no in vintage sure grip that it is too slippery….. :wtf: :BangHead:
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I agree that makes no sense.
How much a modern lube slips the clutches should not relate to the base stock. I would think it has to do with the additive package.
 
Mattax said:
Guess I'd want to k now why.
Especially when when a guy like jaws running SS was running 90




I agree that makes no sense.
How much a modern lube slips the clutches should not relate to the base stock. I would think it has to do with the additive package.
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See why I am so confused :BangHead:

He recommended 85 140, I asked no syn? He said no in vintage.

Service manual says 90…… I think I should use conventional 90.
 
Maxcustody said:
See why I am so confused :BangHead:
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Yes I do. I recall it when I was inquiring about parts - figuring out what to buy took several back and forths to get my specific questions answered. So its not just you, or this particular question.
 
we always just used normal 90 with additive (at the time we would go to the GM dealer to get the additive since it wasn't common everywhere)
 
@Mattax @halifaxhops

Anyone know what would cause this type of carbon bridging on one of Dads plugs? The rest of the plug looks damn near unused

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