I recently had the 4R70W in my 2001 F150 rebuilt. I wasn't in a position to shop around, but my regular mechanic (who writes a column for the local paper, and has often won various competitions) recommended this particular shop. In checking that they used Mercon V, the technician said that they did and also used Lubegard.

Knowing that Mercon V is very specifically formulated for my trans, I was unhappy with any modification. But from what I can see here and elsewhere, many people seem happy with Lubegard. And my transmission seems very good. I actually like the way it shifts better. WOT shifts are firm, but not harsh. I used to back off slightly to prevent the "jerk". Of course, I don't know how much, if any, of this is due to Lubegard.

Can anybody relate any actual problems with this additive? Do any of you know enough about what's in it to project any potential problems? I am inclined to change the fluid as soon as it warms up a little around here, but maybe I shouldn't. I would appreciate some second opinions!

 

Lubegard makes a variety of products. Some as additives and others to modify the properties of ATF. I have used Lubgard Red in my Ford and Chevy with good results, as an additive (RED) bottle. I used it on my new F150 after 5K to dump the original factory fluid and filter, and my old 4E60 tranny in my Lumina. Great results in both. Smoother shifting and quicker engagement when cold on my slow 4E60. I can't comment on their other products, since I havn't used them. Find out what the mechanic used and go from there. I would hope he used Mercon V fluid and a Lubegard additive.

Good Luck,

 

Yes, I believe that is what he used.

 

You are good to go then. I also have heard that AAMCO uses Lubgard in their rebuilds. Merry Chirstmas.

 

LubeGard, is one of those rare additives that actually is a quality product. I would use with confidence.
A friend in Ohio first told me about this product in the late 90s. He used it in a 1969 Dodge Dart GTS full race car, running mid 11's. The 727 Chrysler automatic hooked hard, manual valve body, and used the Lubegard additive with RED LINE ATF fluid.
I love the way Mopars built for drag racing hook out of the hole. You never see a Mopar with wheel hop. Super Stock leaf springs, 50-50 shocks, and a pinion snubber. Correct slicks,those Mopars are able to get the power to the pavement.
If you ever see a 60s or 70s era Dodge or Plymouth with traction bars, it's usually because an ex-Ford or GM owner, who does not understand Muscle Mopars. Said owner should immediately talk to me concerning traction or ladder bars, on a Chrysler product.

I have seen LubeGard sold in race shops and other auto speciality stores, dedicated to racers and enthuisists. Just my $.02

Ed

 

Also run an external filter.

Wix Transmission/PS Filter
===================
Wix transmission/PS filter #58964
Ford equivalent filter kit #XC3Z-7B155-AA
Ford filter alone #XC3P-7B155-BA
200 psi working, pressure relieved, magnetic
change yearly or 12000 miles

 

Thanks, I already do. I appreciate the cross reference 'cause the Ford is getting pricey.

Are you saying these are magnetic?