Thanks 10/30 it is great forum thank you peepsId say no being RP says its a replacement for a trans that use ATF. If your gonna use 80/90 lube make sure its GL4 rated not the MT1 lubes the likes of autozone sells. I ran both 80/90 in my 91's ax5 and 10/30 synthetic and Id use nothing else but the 10/30 which jeep now recommends. If you live where its hot all the time the 80/90 lubes would be OK but shifting in my ax was near impossible in 20 degree weather.
44+ dollars a gallon isn't my idea of affordable, espeically if you have multiple gearboxes that need it. STALUBE used to be my go to when I could get it for 20 or less dollars a gallon. Then one day their price doubled and it's now along the same lines as what you mentioned.Summit racing and Jegs both sell 2 or 3 brands of GL4 manual trans specific gear oils and last time I bought quarts they were $10.99 each IIRC.
Factory "B" service schedule, which is the severe duty schedule, calls for an 18k mile change. I do 12,000k on the YJ, and track the CJ2 via operating hours, The CJ2 isn't exactly a daily driver so it gets changed once a year. The XJ has an AW4 in it and I do a 10k change on that one, but the Autos have a 12k change interval under the B schedule. Dex/Merc is way cheap though, and it's faster than changing the engine oil on an AW4 to just do a basic fluid change.How often you changing lubes? If your worried about wasting money on a vehicle Id say off the jeep and buy a toyota.
Well, I like to think that I'm not a dummy, but I was a Marine for a while and now a firefighter/paramedic. I'm not sure if eating crayons and running into burning houses is too smart.Dang man, thats crazy overkill IMO. MFG'ers put that kind of maint schedule in the manual hoping your a dummy and take it to the dealer for a $300 a year major lube service. You doing a lot of water crossings and getting intrusion?