I just bought a 1997 Legacy Outback with a manual transmission. 248,000 miles and the synchro's in 1st and 2nd gear don't work fully and the car grinds when downshifting if I don't double clutch. I am taking it in to fully service it front to back and want to know what the absolute best fluid to use in this transmission would be. I have read many posts here and seen several kinds recommended... many that actually improve things. That would be great... if possible. Also, how many quarts does the tranny/transfer case hold?
Two brands mentioned here are the Red Line and the Royal Purple, both synthetic. Are these the best way to go? Either better than the other?
If the fluid that comes out is really dirty, then I have learned here that I should plan on changing the fluid every thousand miles until it cleans up. Is there a particular type I should use for this that will aid the process?
I am a big fan of using the best fluids possible and have a 96 Mercedes C Class that has been running Mobil 1 since it was new and my new Subaru will get to enjoy it's final years with a similar quality oil. Which reminds me, which viscosity synthetic oil should I run in the crankcase?
Thanks for any advice you can give as I work to bring this aging soldier back to health.