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Discussion Starter #1
whats the difference?
I want to use the Mobil synthetic on my 94 transmission but I can only find it in GL-5 and the book recommends GL-4.
help!
 

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Low flying black object
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Most GL-5 gear oils have an additive that is corrosive to the syncros/rings in the SR tranny, that is why the book recommends GL-4. I wanted to use Royal Purple gear oil in mine when I installed my ACT...so I called Royal Purple and asked them about it because theirs claims to be safe for all applications calling for GL-4 and GL-5...the tech said that they do not use the same type of corrosive additive, that is is safe to use. I have been using it for about 3-4 months now, and I know there are a few others that use it as well...I would make sure it is GL-4 from any other manufacturer though...

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Brad B. 96 SE-R
PR CAI,HS Gen 4,ACT,ES motor mnts,1.8 dropw/AGX's,F&R STB's,17deg timing,91 intake cam,NGK wires,205/40/17 Kumho 712's,SMC short shifter,Royal Purple synthetics..AND A VANILLA AIR FRESHENER!
 

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Whisky Tango Foxtrot
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You can get the Royal Purple at carparts.com. There is usually some kind of discount floating around. I bought mine there for 6.30 a qt. I can't comment on how well it works, for I have yet to install it.


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Sean
97 SE-R w/PR CAI,Unorthodox UP,AEBS Header, Courtesy Exhaust, and Pretty looking pedals and shift knob
 

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What is with the discount at Carparts.com? I keep hearing people talk about getting a percent off, but I have yet to see anything on the site......

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Kevin
93 Classic
w/ advanced timing & Stillen POP
 

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Whisky Tango Foxtrot
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<font face="Verdana, Arial" size="2">Originally posted by kpw97:
What is with the discount at Carparts.com? I keep hearing people talk about getting a percent off, but I have yet to see anything on the site......

</font>
The discounts I use are at http://www.importhookup.com/ I think the 20% off I used expired last week, but there is a $30 off $100 purchase that is still active I believe.


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Sean
97 SE-R w/PR CAI,Unorthodox UP,AEBS Header, Courtesy Exhaust, and Pretty looking pedals and shift knob


[This message has been edited by Soupaflie (edited 06-05-2001).]
 
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Discussion Starter #6
Well, I went ahead and did the GL-5 Mobil 1 Synthetic Gear Oil. I called two Nissan dealers in town and the both said it was just an upgrade from the GL-4. If anything goes "KABOOM"!!, I'll be sure to post it.
Thanks for the input though.
 

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Low flying black object
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It won't go KABOOM...it will slowly eat away at your syncros...but hey, if Nissan Monkeys told you go ahead...well?

I wouldn't unless Mobil One stated that it is safe for GL-4 applications. Just my .02

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Brad B. 96 SE-R
PR CAI,HS Gen 4,ACT,ES motor mnts,1.8 dropw/AGX's,F&R STB's,17deg timing,91 intake cam,NGK wires,205/40/17 Kumho 712's,SMC short shifter,Royal Purple synthetics..AND A VANILLA AIR FRESHENER!
 

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Supposedly, it says somewhere on the Mobil One website not to use it for out type of trannies. I forget exactly where.

I just ordered some Royal Purple myself. Got 4 quarts for $36 from Carparts. I think that's a damn good deal. I'll let everyone know what I think.

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Kevin
93 Classic
w/ advanced timing & Stillen POP
 

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For what it's worth, I've had Mobil 1 in my trans (5 speed) for over 120,000 miles (the same 4 quarts even) without any problems.
 
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Discussion Starter #10
I probably should have ordered the Royal Purple stuff but I'm too impatient.

Well, at least I'm all "Mobil"-ized now.
In the tranny and the engine.
 
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Discussion Starter #11
OOOOOPPPPSSS.....
Well guess what I found.
this is copied and pasted from the Mobil 1 site:

Mobil 1 Synthetic Gear Lubricant is suitable for all automotive applications where lubricants meeting MIL-PRF-2105E, API Service GL-5, are recommended. It can also be used in rear axles where an API Service GL-4 lubricant is recommended. It should NOT be used in any transmissions requiring an engine oil or automatic transmission fluid, or GL-4 performance level.

I guess Im getting on the phone and finding out for sure from somebody there.
(I made the word "not" in capitols myself so it wouldnt be overlooked.)

DOE!!!
 
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