Permatex High Temperature Thread Sealant (when changing differential fluid)

[nU7OuxIx]

I'm going to be changing my differential fluid and will use the Permatex High Temperature Thread Sealant #59214, on the drain and fill holes. According to the instructions, dry time is 24 hours.

Does this mean I can't drive the jeep for 24 hours? Can I apply the sealant to the drain hole, fill the differential up, and then let it sit for 24 hours to dry? Or do I have to apply it to the drain hole, wait 24 hours, fill, apply it to the fill hole, then wait another 24 hours?

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[m3reno]

I wouldn't use that on the plugs. A little teflon tape is all you need. I use either the white (four or five revolutions) or yellow (3 three revolutions). The yellow is slightly thicker than the white and doesn't breakdown when in contact with the oil.

• White – Basic Thread Seal Tape. ...
• Pink – Thread Seal Tape For Water Lines. ...
• Yellow – Thread Seal Tape For Gas Lines. ...
• Green – Thread Seal Tape For Oxygen Lines. ...
• Grey – Thread Seal Tape For Stainless Steel

 

[dpike]

Why are you using the sealant ? Yellow thread tape is good for fuel and oils.

 

[Rhinebeck01]

@nU7OuxIx

Use either Yellow or Pink Teflon tape. It's just easier to deal with..

I would not use White Teflon tape with/near petroleum products... however you will hear that many guys do.

For ease of application and because it is more stout/heavier, I use/prefer Pink Teflon tape.

Pink Teflon is also preferred for water lines..

 

[Buster1]

Permatex 59214 is great stuff. I use it on the diffs, trans, & transfer case fill and drain plugs on the ‘51… and anything that needs a proper seal. Used it too on all my fuel fittings when I rebuilt the fuel lines in the ‘51. Highly recommend over tapes.

For application, put a bead all the way around the plug itself, then ‘work’ it back and forth in the hole to ensure good coverage on the threads. When ready, torque to specs and you’re done.

I prefer to let it sit and dry at least 3-6 hours before filling, but you could probably fill right away and be safe.

 

[Buster1]

Why are you using the sealant ?

So much easier. And if you’re dealing with fuel lines, tape is a no-no.

 

[nU7OuxIx]

I prefer using the sealant because that's what came from factory. I also hate removing little pieces of teflon tape when I remove the fitting in the future. I also bought the sealant, but I also have yellow teflon tape at home too.

It seems like the majority of people use yellow teflon tape here. I'd be interested to hear, besides drying time, why not use the thread sealant?

 

[Rhinebeck01]

@nU7OuxIx

Thread sealant is aok to use if applied/used properly. Go ahead and use it if you have it and have time to fool with it.

I myself prefer Pink Teflon tape as it applies quickly and easily as it is heavier and yes, it is one of the recommended "colors" to use with petroleum products.

If I do not have Pink Teflon tape handy, I use Yellow Teflon Tape, but will absolutely not use White Teflon tape as it is not meant to be used with petroleum products.

I often have say 3 JL's lined up for diff/transfer fluid changes as I do them for local guys that do not want to do themselves. Yes, I charge them for my time and they pay for the materials. With that said time is money and I do not want to waste time/to fool with sealant.

As for the Teflon tape... To remove the old Teflon tape from a plug, I use a wire brush... Tape comes right off/easily with a few turns of the wire brush wheel or with a wire brushing by hand.

 

[roaniecowpony]

Way over-thinking this. Put some teflon tape on the threads and be done with it. I haven't heard of issues with white vs pink or yellow teflon tape. But in looking it up, I learned more about Teflon tape than I knew a few minutes ago. ?

White is the thinnest
Pink is thicker
Yellow is thick and somehow chemically resistant to hydrocarbons.

 

[nU7OuxIx]

Way over-thinking this.

Over-thinking is my middle name.

I think I may ditch the sealant and go with tape. The biggest thing is the dry time. If the sealant would dry in an hour I would go that route. Since it doesn't, I think I may go with the tape and hope for the best.

Same torque setting for teflon tape, or do I have to adjust it for a "lubricant"?

 

[Heimkehr]

I use the yellow Teflon tape mentioned earlier in the thread, after first cleaning the threads on the drain and fill plugs using a small wire wheel on my Dremel. There's usually a roll of white and/or yellow threadseal tape in the toolbox, so that's what I use (and have done so for years.)

When reinstalling the plugs, I use my calibrated torque wrist to give them a proper snugging. Another years-long, discretionary habit that has served me well.

 

[mwilk012]

Man, y'all are way overthinking this stuff. Just tighten the plug. I suppose I can see the value of teflon tape if you are in an area of high road salt use, to monimize corrosion. Other than that, meh.

 

[nU7OuxIx]

A month ago I used the permatex sealant on the fill hole to check the levels. Yesterday I used yellow teflon tape on the drain and fill holes.

It's a personal preference but I liked the permatex sealant over the tape. I cleaned the plugs with brake cleaner and wiped out really good, wiped down the female threads, wrapped them three times, pushed the tape in the threads, and made sure the wrap was going the right way. To me, it just seemed like the tape slipped off the threads instead of tightening between them. It's not leaking and I'm sure it's fine.

As to overthinking. Yeah, a lot of us do. For me, I think it's knowing that I spent 60k on a vehicle that I don't want to muck up.

 

[Chocolate Thunder]

Am I the only person who owns a Jeep that doesn’t use sealant nor Teflon tape on differential plugs and has never had a leak?

 

[Rhinebeck01]

Am I the only person who owns a Jeep that doesn’t use sealant nor Teflon tape on differential plugs and has never had a leak?

I have Jay Walked for well over 67 yrs. and I have not been run over yet.

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