gonna change my oil and do a timing bump this weekend. maybe flush my tranny too. was wonderin if i should go ahead and do the differentials too? what oil, and gear grease should i use? thanks. any help is much appreciated.

 

I'm doing my tranny and my differentials soon hopefully too and I'm going with royal purple it's expensive but you only have to do it every once in a while so that's what I would go with and from what I've heard 75w-90 if you want fuel economy and 75w-145 if you tow for the differentials and I'm using royal purple synchromax in my tranny it's supposed to be, from what I understand, a ATF specially designed for manuals that take ATF

Ps use full synthetic

I know I'm not the only one that uses castrol gtx high mileage so might wanna think about that or you could switch to full synthetic but it might cause a small leak

 

well my engine already burns a little oil so i dont really need to switch to any kinda synthetic do i?? and btw... how exactly do i do my diffs? never done it before, sure i could figure it out but i dont wanna somthin up.. and also, i have a leak somewhere that is leakin tranny fluid, not anything major but would like to fix it.. it dripps off of the little pan under there. sorry not real sure what its called, new to all the mechanic stuff.

 

Take pics someone on here will get ya fixes up but I wouldn't switch to synthetic motor oil unless you were sure there was no leaks and you weren't burning any oil, but in your differentials you'll improve your mpg so synthetic is the way to go for that

Btw is your truck burning or leaking oil because the castrol high mileage is supposed to help stop leaks not much you can do for it burning oil though

 

oh sorry thought you were talkin bout motor oil lol. but i believe it is burnin a little, smokes a little on start up, revin it ect..

 

I was , sorry I worded it kinda weird but yeah if your burning oil don't switch to synthetic motor oil I'll edit the other post to where it makes sense

 

I changed my oil and used GTX High Mileage. Felt a big difference, but the old oil wasn't very dirty or sludgey at all! When I do my rear end, I will be using 75w90 gear oil and will look for synthetic. If you can, pick up a Haynes Manual, or you can go to your library and pick one up.

 

It's definitely worth the 20 bucks because youll probably use it alot I know i do

 

what is the haynes manual?

 

It's a maintenance and repair manual. Should have it at any basic autoparts store. Also, should be at your local library as well. It would be better to buy it rather than rent from the library, since you will never know when you will need it

I know I'm really glad I bought it