1. Home
  2. Subaru Cars Forum
  3. lubegard black in Subaru => big problems, pls help

lubegard black in Subaru => big problems, pls help

I had a garage recently replace the transmission fluid in my subaru legacy. The garage also added LubeGard black (friction modifier. I believe the transmission consists of a torque converter, gears, pump, filter and an automatic clutch at the rear end to distribute power whenever the computer feels necessary. The car is a four wheel drive.

The problem is that after adding the fluid all the gear changes and clutch engages/disengages have become very jerky. It'n no longer silky smooth like before. Adding LubeGard black is NOT recommended by Subaru, so why they added it is beyond me and they are a Subaru garage!!!

I had the garage change the oil again. That would have reduced the LubeGard in the tranny by about 50% because roughly half the oil still remains in the tranny. I live in Switzerland, no one here does a full tranny flush like in the USA. Despite the 2nd oil change, the problem still exists.

I am fed up with the garage and don't want to go to them again. I would be keen to hear of any ideas on how to get rid of all traces of the LubeGard or to neutralise its effect. Thanks.

Reply to
redphan
Loading thread data ...

Every time you dain/refill you change~45% of the fluid so to get close to

Reply to
Edward Hayes

Hi,

I'm not sure exactly what Lubeguard Black is or how it works, but in the US there's a cleaner called Trans-X that does a great job of removing varnish and gums. I don't know if it's available outside the States, nor if it would get this LB stuff out, but it might be worth asking around.

Rick

Reply to
Rick Courtright

Reply to
Edward Hayes

Yes, it was Dexron III manufactured by Castrol.

Reply to
redphan

Have a look at the Amsoil site (Amsoil.com). There is a section somewhere that describes how to replace the trans oil completely by using the oil cooler line to the radiator. I've done it and it's the same method used by some trans shops who use a machine to do it more quickly, called a T-Tek. The motor is run at idle, and the oil comes out of the cooler line from the transmission, and you add oil at the dipstick tube until you have put in the total amount in the transmission (chek the driver manual or a shop manual for the quantity for your car, it's around 8 litres or so). The T-Tek is quicker because as the oil is pumped out of the cooler line, the T-Tek adds the same amount into the line going back to the transmission. Doing it manually is slower, but the results are the same, a total trans flush. Ed B.

Reply to
ed

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.