Dump whatever fluid you have now.
Refill case with Redline lightweight shockproof.
Good ebay deal on how much you need with here: http://www.ebay.com/itm/RED-LINE-LIG...9c5041&vxp=mtr
Dump in 3 qts, then add/check/add/check until full.
Odds are it will cure all ills. If not, you wasted $XX on fluid and now you know your synchro is 100% toast and you need to use the expensive solution.