First and foremost, is a dexos approved engine oil, but many manuals in the past also used conventional motor oils, this is full synthetic.
Its the only oil I can find that claims to be equivalent to GM part number 19259104, but in years past, with a number of different transmission oils, Royal Purple makes a Synchromax oil exclusively for manual transmission vehicles and cross referenced to GM part numbers as well as many other vehicles.
But they do say, Synchromax was intended for manual transmissions that originally specified automatic transmission fluids, yeah they used these too. In my Hondas, was just using conventional motor oil, never had problems with these. Unlike engine motor oils, a manual doesn't have all that acid and carbon crap in it so should last a lot longer.
The claim for Royal Purple has some kind of fillers in it to fill those microscopic size holes in wearing parts for reduced friction and much cooler operation.
Dealer price for part number 19259101 is like 40 bucks a quart, HPS is more like 9 bucks a quart, but can buy XRP for around 17 bucks a quart.
Can't find any specification on exactly what 19259101 is, for all I know, is the cheapest synthetic oil you can buy or maybe even a blend. Some here say 19259104 is crap.
Ha, sure would hate to lay out 120 bucks for crap and I can read something is great for only 27 bucks.
Opinions and experiences would be welcomed on this subject. Royal Purple is the only one that says its equivalent to that gm 19259104. Reviews I have read say its much better than that OE stuff.
Its the only oil I can find that claims to be equivalent to GM part number 19259104, but in years past, with a number of different transmission oils, Royal Purple makes a Synchromax oil exclusively for manual transmission vehicles and cross referenced to GM part numbers as well as many other vehicles.
But they do say, Synchromax was intended for manual transmissions that originally specified automatic transmission fluids, yeah they used these too. In my Hondas, was just using conventional motor oil, never had problems with these. Unlike engine motor oils, a manual doesn't have all that acid and carbon crap in it so should last a lot longer.
The claim for Royal Purple has some kind of fillers in it to fill those microscopic size holes in wearing parts for reduced friction and much cooler operation.
Dealer price for part number 19259101 is like 40 bucks a quart, HPS is more like 9 bucks a quart, but can buy XRP for around 17 bucks a quart.
Can't find any specification on exactly what 19259101 is, for all I know, is the cheapest synthetic oil you can buy or maybe even a blend. Some here say 19259104 is crap.
Ha, sure would hate to lay out 120 bucks for crap and I can read something is great for only 27 bucks.
Opinions and experiences would be welcomed on this subject. Royal Purple is the only one that says its equivalent to that gm 19259104. Reviews I have read say its much better than that OE stuff.