06-13-2018, 01:14 AM
GL means gear lube, not anything else.
there are lubes sold that are marked, GL3,4,5 on the bottle (we have them in texas , made here)
it uses additives that do not wreck syncro rings (know that the damage may only happen parked in very humid climates say Florida)
and has additives for GL5 (HYPOID GEARS RUN HOT) THAT HAVE EXTREME PRESSURE GL5 ADDITIVES TO PROTECT THOSE NASTY HOT GEARS IN AN AXLE (under load they do get hot)
those GL5 additives can make shifting very hard, if used in a box.
some top makers, can do that magic, I have tried it.
it is not easy make, and most stores do NOT sell it.
I think the Pennzoil you fund is best, .... non GL5.
there are lubes sold that are marked, GL3,4,5 on the bottle (we have them in texas , made here)
it uses additives that do not wreck syncro rings (know that the damage may only happen parked in very humid climates say Florida)
and has additives for GL5 (HYPOID GEARS RUN HOT) THAT HAVE EXTREME PRESSURE GL5 ADDITIVES TO PROTECT THOSE NASTY HOT GEARS IN AN AXLE (under load they do get hot)
those GL5 additives can make shifting very hard, if used in a box.
some top makers, can do that magic, I have tried it.
it is not easy make, and most stores do NOT sell it.
I think the Pennzoil you fund is best, .... non GL5.
http://www.fixkick.com