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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
Black or Ultra Blue? Going to do the rear differential. The ultra states rear differential on there site the black doesnt. But I here alot of people use the black. I have some black in the garage will it work or should I drive to the store and get the ultra blue?
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Did you mean Ultra Black, or just Black? The black's are normally for repairing weatherstripping and the like, so stay away from those in this case.
Both are highly oil reisistant as well as sensor safe.
The red is for continous high temp use, not sensor safe, and not as oil resistant as the Ultra's.
I believe the difference between Ultra Black and Ultra Blue is that Ultra Blue is supposed to work better to bond to surfaces that are not completely clean of oil.
I've used both, as well as the red over the years for all sorts of gasket making and never had an isssue with leaks.
As long as you clean the flanges really well, use either one.
__________________
2005 QC 1500 Hemi, 20's, 3.92 LSD, fog lamps
DNA grill, de-badged/re-badged
Superchips Cortex 3950, AT3030
Rear lowering shackles, Cooper Zeon LTZ's
Last edited by ramjamhemi; 04-13-2011 at 04:03 PM..
Well since I had to run to get the oil anyway, I went and picked up the Ultra Blue. So far no leaks. I'll give it a few days to make sure, then I'll be worry free. Found a wire brush works better than a scraper to clean the surfaces. Tried a gasket remover but it didn't penetrate that well or it was just to old from being in the garage. Thing took almost 3 full quarts instead of the 2.45 it states in the Haynes Book. But money well spent since it still cost me about half. Alot of places wanted $100-$120
I have always used the blue and being ****...along with a gasket. Never a leak on any of my vehicles. And use the stuff Weed shows works great with minimal effort of a brush.
__________________ Tim
2003 1500/4x4/5.7L/40 Series/6.1 Springs/Manley Push Rods-P/T Fire & EMS POV
2004 40th Anniversary Mustang GT (Wifes)
1999 Trans Am WS6 Ram Air Pkg. / LS1 Modified
I used this stuff I get from work and it will eat through a gasket or paint in no time. Just dont get it on any skin and it WILL burn
Yep, I used to have some of that but I think autozone either was out or they don't carry it. Napa I know does for a fact but I didn't want to drive to get there. But for future reference the 3m stuff sucks big time. It's says silicone on the can but it didn't peneatrate the RTV at all.
I haven't used it in automotive use yet, but Hylomar UniversalBlue is what I use to seal mating surfaces on cooling pumps for power transformers in the power utility industry.
Permatex RTV sealant
Tim
2008 RAM 1500 Sunburst Orange BigHorn. 5.7L HEMI
