witam

This is a procedure that is popular on an Acura Legend forum to flush out your tranny. 4x Tranny Flush by Gil Total stuff needed: (1) Bottle of smart blend ( Black Bottle) (I used Lube Guard from NAPA for $11.00) (4) quarts of "F" type Trans fluid (7) quarts of Dextron fluid (4) quarts of Genuine Honda fluid Time to play with your car....... 1. Drain the fluid and add 3.5 quarts of "F" type fluid. F-fluid (ATF) is what is used in Ford transmissions. It has a very high detergent base to it that is designed to clean the internal parts and to break down varnish build up. 2. Drive the car around for several miles and then drain it again . I do not recommend that you leave the F-type fluid in the car for an extended time. 3. Now having drained the fluid refill the unit with 3.5 qt's of Dextron II or III and again drive the car around for a few miles working the Dextron in. While you are doing this what you are actually doing is diluting the F-type fluid and flushing the dirty fluid out of the converter at the same time. 4. Return to the driveway and dump the fluid again and 5. repeat the process again. (Steps 3-4) 6. Now , having returned once again , you have drained one last time. At this point what little F-type fluid that was left has been drastically diluted and the majority of what you have left is Dextron. 7. Now fill the tranny up with Genuine Honda ATF . Honda fluid has a high silicone base to it and that is what will keep your tranny shifting smooth. You now have 3.5 quarts of Honda fluid mixed in with about 5qts of Dextron mixed with .5 qts of F type fluid (Mix) . Not enough to hurt a thing. Now to even things out and bring us all back to Basic Honda fluid , get a bottle of a product called "Smart Blend" It's made by a company called "Life Products" Be sure to get the Black bottle as it is specially designed to convert Dextron over to Honda fluid, this is a product that we endorse, and use it in all our transmissions through out the building process. If you can't find it then try Lube Guard , and again use the Black bottle. Both products have red bottles and I thin also a Blue one too? 8. Pour one full bottle of Smart Blend into the tranny and you're set. Smart blend reduces operating temps as well as is a friction modifier that will reduce clutch pack chatter as well as help with converter lock up. Now the reason you start with the F type fluid is to clean . Then you use Dextron to dilute the F-type (Ford) and besides to dump that much Honda fluid just to flush would be a sin, not to mention costly as all get up.

That was very informative. Now I have a guide to follow when shopping for a used one.

I am looking for a 90-93 LS400 and would like some tips on what to look out for on this model. I have browsed thru the forums and know about the climate control display, and the speedo needle and also the steering pump leak. These are all common failures in this vehicle but they are also fairly obvious. Are there other problems that are less obvious that I should look out for?