is see posts all over . QS web site useless , looks like Diet Coke seller.
one in 2002 that said. ( up to 2008 )
Quaker state 75w 90 synthetic , says right on bottle ,safe for bronze syncros.
and
does not us the EP (extreme pressure) sulfpur Phosporous. but some thing else.
quotes contra dict
the Quaker State Tech at that time informed me that their GL-5 was not Yellow Metal Friendly. Perhaps their formula has changed.
diff LUBE in USA and CANADA. same name on bottle ,fine print diffr.
after all what do we know.
the manual and fsm says dont use it.
we do know the EP sulfur Phos. is bad for most yellow metal alloy syncros. (not all)
those are the facts. every one knows it and many oil makers have comments on their respective web sites about it.
some EP addative can eat them.
so.
i behoves the bottle makers to mark the bottles. or have a web page.
read the fine print.
see this
manual transmission oil? - Car Forums and Automotive Chat
common thread ,all forums, little answers from the dino joice guys.
(if not on label GL5 , ok for syncro)
