Synthetic Castrol 5 w 30 if Getrag

[SFerrin]

On the advice of this group (reading archives and listening in) I have just changed the oil in my getrag 5 speed. The fluid that was in it was pretty clean and seemed in good shape. I put in Castrol Syntec 5w 30. By the way, my fill plug wouldn't open. I actually torqued it so much it started to deform the inside of it, so I quit. I just used one of the upper pto bolts and pumped it in there and it worked fine. I think I put in just slightly over 5 quarts. I assume this is OK. I noted in the oil drain jug, that it left behind just a bit of metal shavings. Not much. This has 213 k miles. Is it OK to have just a bit of metal shavings, or am I on the way to trouble. It shifts fine. I've only owned it 3 months so I don't know when it was last changed.



By the way, the manual says to use Castrol Syn"torq" and says to use it only for the NV4500 transmission. I assume you all know more about keeping these older trannies happy than the manual so I put in the synthetic. Everything OK? I only pull a two horse trailer with this. Am I doing right by my rig? By the way, I can tell clear difference between this motor and my other pickukp. In idle and second gear this will go straight up the hill of my driveway. Torque. Can't do that with my gasser. :-laf

 

[BJMarshall]

The NV requires the Syntorq because of the fiber synchros I think. There is no reason to use it in the Getrag. I believe the manual actually calls for SAE30. There are some here that run gear oil in theirs, and others that swear by 5w30 synthetic. Pick your own, but the main thing is make sure it is full of something. I run Mobil 1 15w50 filled to the top PTO cover bolt(a little over 6 quarts) Yeah it leaks a little out the top, but it is full.

 

[bgilbert]

I wouldn't worry too much about the metal shavings. The factory fill is 3. 5qts. Most agree on overfilling by 1 quart. I use 5 qts exactly. This is 1. 5qts over, I wouldn't go ANY higher than that. How much did you slightly overfill over 5 qts?

 

[SFerrin]

Bill:



Thanks for the info. I overfilled over 5 quarts by about 2 ounces. Since some runs out while pumping, I'm not sure I did more than that. It sounds like I'm ok. Thanks, and thanks re the metal flecks. I really like this pickup better than any of the new ones and would like to keep it for some time. Runs great. Thanks again.



Doc

 

[SFerrin]

BJ:



Thanks very much. It sounds like I put the right stuff in, and in about the right amount. Next week I'm going to kill the dowel pin.