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+--- Thread: lube confusion (/thread-lube-confusion)
lube confusion - mikedalcollo - 03-10-2016
Quick question.....
http://www.fixkick.com/tranny/napa.JPG for 5spd tranny AND diff
http://www.napaonline.com/p/COR613 for transfer case in the rear
i have been over and over your pages, and am a little confused. Different terminology.
The rear axle is the transfer case?
The differential is what the two front axles bolt to?
GL4 for tranny, do not use GL5?
GL5 for axle (transfer case)
That page blows my mind*:0
RE: lube confusion - fixkick - 03-10-2016
(03-10-2016, 05:16 AM)mikedalcollo Wrote: Quick question.....
http://www.fixkick.com/tranny/napa.JPG for 5spd tranny AND diff
http://www.napaonline.com/p/COR613 for transfer case in the rear
i have been over and over your pages, and am a little confused. Different terminology.
The rear axle is the transfer case? never the transfer case is bolted to the rear if the main transmission. and runs GL4.
The differential is what the two front axles bolt to?
GL4 for tranny, do not use GL5? (that means GL5 only lube but some lubes are GL4/and GL5 all in one like the napa jpg above. shows.)
GL5 for axle yes, (transfer case No)
both the front and rear differenetial gear cases run GL5 only , GL5 is Hypoid gear lub, see that funny offset drive pinion, its under huge stress and needs GL5, never gl4.
That page blows my mind*:0
there is no confusion,
the book is clear as day, axles GL5 , boxes GL4. boxes 5sp its sidekick mr. transfer case.
what is the confounding is this.
1: some oil companies make a DUAL lube, like your first link above shows.
2; most stores sell no, GL4 of any kinds, that is because, A: LESS THAN 5% OF CARS HAVE STICK SHIFTS, AND B: MOST of those owner never buy lube, so stores are loath to stock it.
3: Some GL5 lube is loaded with sulpur, and eats up brass syncros, that is why penzoil sells syncro mesh lube, just for these boxes.
4: some SYN lubes cause the sycnrhos to slip bad and grind gears or bulk.
MT1 is for 1950 , manual transmissions with crash boxes, has no syncros in the box. at all. so MT1 , means ZERO today.
if it does not say GL4 on the bottle do not use it in the boxes.
a one line , simple, rule.
if you call the oil companies, hot line 800
they all say the same.
the problem is API, THEY DRAGGING FEET ON THE NEW GL6 (OR WHAT EVER THEY WILL CALL IT) SPEC. OUT A GL5B OR GL6 THAT IS OK FOR GEAR BOXES
THAT IS THE PROBLEM. TOO.
GL5 DOES not damage the box gears. ever. (if you dont grind the dogs, but the gear teeth or ok)
its ok ,just the synchro ring issues.
both damaged (sulphur) and or they slip and grind dogs or balk
putting GL4 (pure only) in to any hypoid gear axle, is really bad. (its is not Extreme pressure rated)
but some gear lube makers can do both at same time. (there is no API spec for this, its and advanced idea) and good.
RE: lube confusion - mikedalcollo - 03-10-2016
Axels = Differentials (front & rear) GL5 only
Boxes = Tranny & Transfer case (bolted to tranny) can be GL4-5 combo, not GL5 only
Right?
That's what I was not sure about. The lube was pretty clear to me, it was the terminology. Sorry if I sound uneducated on the subject, I'm no mechanic just mechanically inclined
one more thing....in your opinion, what brand would you suggest?
RE: lube confusion - fixkick - 03-10-2016
(03-10-2016, 06:32 AM)mikedalcollo Wrote: Axels = Differentials (front & rear) GL5 only
Boxes = Tranny & Transfer case (bolted to tranny) can be GL4-5 combo, not GL5 only
Right?
That's what I was not sure about. The lube was pretty clear to me, it was the terminology. Sorry if I sound uneducated on the subject, I'm no mechanic just mechanically inclined
one more thing....in your opinion, what brand would you suggest?
great, all good.
the brands vary by region and country and time. (some products gone now)
some stores sell, Pennzoil syncro lube.
pep boys has it. granger, summit racing,,, (my pep has it)
https://www.pepboys.com/product/details/9574508/00787
no lie, if you drive to 10 stores here not one has GL4. (but 1)
some i have to ask then they bring it on from warehouse same or in 1 day.
advanced auto has it
http://shop.advanceautoparts.com/p/pennzoil-synchromesh-manual-transmission-fluid-1-quart-3501/7070062-P
I think this braND IS the most prevalent GL4. ?
but
wow, MTF is sold by Valvoline Synchromesh Manual Transmission Fluid
http://www.napaonline.com/p/VCA811095