Postby Workshop Help » 27 Dec 2007 20:23
As you say, EP90 is thick, and for your climate and time of year, too thick. The factory changed their minds and recommended the lighter weight ATF for the LT77's. ATF is about in the 20wt region and is a high detergent composition. The ATF for late Ford and GM products will suit your needs. I use the high mileage formula from the local Walmart as it is about $2.00/qt. Since the gearbox oil change will be at the same time as the engine oil change, I cannot justify the more expensive high tech gearbox fluids for my use.
But, the choice is yours.
You've struck a nerve! What if a large magnet, such as is found in the sumps of automatic transmissions was placed in the sump of the gearbox next to the pickup tube? You've seen them before, large, flat, doughnut shaped magnets. Naturally, it would never be cleaned until an overhaul was performed. Would it be strong enough draw the steel swarf away from being sucked into the oil pump? Also, being a magnet, it would stay put in the iron sump and away from the gears.
This idea has a glint of promise. Is anyone willing to try an experiment with a magnet in your sump? I would, but my gearbox overhaul is done and back in the car.
Mildred Hargis
