gearbox oil

reyft

Member +
Need to do service, what gearbox oil size. semi synetic or full, trying find good make. it not lsd ;(( thanks.
 

Llawgoch

Member +
differentials transfer boxes and axles use gl5 rated oil, like usually 80w 90 or stright 90. gearboxes with synchromesh like gl4 rated stuff. thats a fact. go check it out, i know toyota say gl4 or 5 but putting gl5 in will give you a really crap gearchange, it mite be fine when the box is brand new, but once the synchros are worn a little then they need a little help working , so putting gl4 in will give you a much much nicer gearchange.

you search the net guys. or even just read the pot of oil before you buy it, the oil i just put in my rav4 transfer box and rear diff said on it, for use in hypoid axles and differentials. no mention of gearbox, and thats a gl5.
and the stuff i put in my gearbox said clearly on it for use in modern 5 and 6 speed synchromesh gearboxes. oh what a suprise, that was a gl4!
 

dac69er

Super Moderator
I just checked the oil I have used. states GL5 on the front and on the back said it can be used in differentials, transfer boxes and all types of gearboxes.

as I said. I have genuine stickers from the factory on my ep85 which gives the grade and spec of oil to use and its GL5.

i have read the stuff on the net about it and yes, you are right, but maybe the starlet box is fine with it as long as it is a gl5 suitable for synchromesh gearboxes!?
 

Llawgoch

Member +
I just checked the oil I have used. states GL5 on the front and on the back said it can be used in differentials, transfer boxes and all types of gearboxes.

as I said. I have genuine stickers from the factory on my ep85 which gives the grade and spec of oil to use and its GL5.

i have read the stuff on the net about it and yes, you are right, but maybe the starlet box is fine with it as long as it is a gl5 suitable for synchromesh gearboxes!?

correct, i find that as soon as the box has done a few miles, 80 - 90k upwards they prefer the gl4 stuff, it shifts a million times nicer :)
 
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