sbrem

Heres a Superliner 10 wheeler tanker still in service, i believe it has a 350 with an 8LL. Rumors have it they might put an automatic in the truck as almost no one can drive it.

It's not a Superliner, but here is a link to another cool Mack tanker.

B model tanker

Thanks sbrem-thought she had a triplex-man that old dog sure sounds sweet-Kevin

I'm almost positive it is a triplex. I think who ever posted that video on youtube just mis titled it as a quad box.

Here is another video that he did

Very cool truck You don't see a U done up nice like that very often

So--what's the purpose of that long wheelbase? Appearance must be it. Looks nice,but can't be much fun to drive,except on the freeway...

Speed

If you look at some of the pictures on his web site, he does get into some tight places with it. I don't know how he does it, but he finds a way. I have seen the truck in person at a truck show, and its VERY cool looking, but probably not the most practical thing. Here is a link to the build up of his truck.

I have decided to use 80-90. Thanks for the help everyone.

The jury is still out on this E/F 8 spd though...not sure how the reliability is gonna be.

Thanks for the help. As to the 8 speed we have 4 dump trucks (not Macks) where I work with Eaton/Fuller 8LLs and they seem to be real reliable. The trucks don't have many miles on them for their age, but what miles they have are hard miles. So I think you will most likely have good luck with yours.

THE Pete he has now isnt half the truck the HE HAD OR THE HIS BRO-INLAW has now

Happy new year yall

Bulldog

I agree. The Petes are a great over the road truck, but I would take a Mack in the dirt anyday!

Mack transmission = Gear Lube

Cool. Thanks again for the help. I guess gear lube it is.

Another related question that I'm still unsure of that you probably can help with: In my 1956 owners manual it lists 3 different types of gear oil GO-A (straight-Mineral Gear oil) which is what they say to use in most transmissions, auxiliarys and some rear ends, GO-B (All-Purpose gear oil) recommended in 1 transmission, and GO-C (extreme-Pressure Gear oil) recommended in 1 transmission and some rear ends. I can try to scan the pages later if seeing it would be of help to you. So I guess my question is what gear oil today would be closest to the straight-Mineral as opposed to the all purpose gear oil.(I don't even know what the difference between the 2 is ) I don't care if it is synthetic or not as long as it lubricates properly. To be honest for the amount I'll be using they truck any type of oil probably would be fine

Again, I'm not questioning what you say at all, I'm just trying to educate myself a little better. Thanks again

If your mind is already made up, then why ask the question?

Use whatever you want, It ain't my transmission, so I really don't care.

Maybe I should put my time to better use than trying to gather information to answer questions for people who don't want to listen.

I'm really sorry if I came across that way, as it wasn't my intention at all. My mind is not made up. It will be a while before I get to changing the fluid anyway and I'm hearing more then one opinion on what to use, so I'm just trying to get all the information before I go and buy the wrong thing. And I greatly appreaciate you using your time to help me out. Again, I'm sorry if I came across wrong.

Here is link to pics

http://groups.msn.com/bigmacktrucks/larrysmack.msnw?Page=2

Thanks for the link. Very helpfull

As far as I know 90 wt gear oil and 50 wt engine oil are the same visosity

I have heard that 90 wt mineral gear oil (which is what Mack used to recommend back when these trucks were new) and 50 wt engine oil are the same viscosity, but the newer (non mineral?) gear oils are too thick and, as you said, don't properly lubricate the needle bearings.

I would be interested in some as well for my B70

I voted for the 50's and 60's as I like both the B's and the R/U/DMs and they both fit in that year range.

I know there have been other threads on this, but I'm still a little confused. What is the best oil to use in a TRD720 Duplex? I know back when it was new Mack recommended 90 weight Mineral oil. I have heard that 50 weight engine oil is what is recommended today. What is my best bet? Also what works best in a CRD78 dual reduction rear end? Thanks

Looks great!

Hey...Welcome aboard!

Thanks

I was told by a fellow in southern Ohio that that video is quite well known? Who woodathunk

Yes it is. I have seen it posted on quite a few different forums.