Ferrari Mailing List: Re: 308 mileage

(continued)

Im using the Redline 75/90 Ns and found it the best of 3 that i tried  
incliding swepco and Agip

smooth shifting and no chatter

On Oct 18, 2007, at 9:12 PM, Peter Pless wrote:
Now THAT is an interesting read!
-----Original Message-----
From: Dave Handa [mailto:dave [at] davehanda.com]
Sent: Friday, 19 October 2007 2:07 PM
To: Peter Pless
Cc: 'Ferrari list'
Subject: Re: [Ferrari] 308 mileage
Jeff,
I am NOT an expert, but this is the post from Brian Crall on
Ferrarichat.com, a master Ferrari Tech...this is what he says:
Originally Posted by Rifledriver

My shop is right down the road from Redline and we use their  
products in the

race cars. I have had many long conversations with them about their  
products

and their recomendations.

Ferrari specs GL5 gear oils for the transmissions. Due to Ferraris  
specs

Redline will not officially suggest anything other than GL5 gear oils.

GL5 basically means an oil that is designed for medium to high  
offset hypoid

differentials. MTL is a GL4 lubricant which means it is designed  
for medium

to low offset hypoid gears. In the 308, 328, 348, 355 transaxles  
there are

NO hypoid gears of any type, hi, low, or medium, offset.

I am not ordinarily an experimenter with others cars except in  
circumstances

where the official way is obviously not working but I have seen MTL  
used

with great success and zero problems in 308 transmissions since the  
product

was introduced many years ago. It was also the oil of choice in the

transaxles of the 355 and 348 Challenge race cars with zero  
problems. Those

transmissions were subjected to greater stresses and heat in one  
weekend

than most of our transmissions are in a lifetime. I cannot say that  
however

of the AGIP oil spec'd by Ferrari at the time. One session at the  
track

finished off several transaxles and we were told unofficially by  
Ferrari to

quit using it in cars that would see track service. That garbage  
did remain

the official oil.

I have been using MTL in customer cars that had cronic shifting  
complaints

for several years including one 85 308 in daily service with over  
115,000

miles on it and the owner is pleased to this day how his transmission

performs.

It's great oil. If you have a shifting problem use it.

I would not use it in any transaxle in a 275, 330, 365, BB, BBi,  
TR, 288,

F40, 550, 456, 360, 430, 612, or 599. Those are all medium offset  
hypoid

gear differentials and should have GL5 oil.

-----Original Message-----
From: Jeff Greenfield [mailto:coyote [at] acme-ltd.com]
Sent: Thursday, October 18, 2007 6:56 PM
To: dhanda5 [at] comcast.net
Cc: Ferrari list
Subject: Re: [Ferrari] 308 mileage
AFAIK MTL is the wrong oil for a 308 transaxle as it is not a hypoid
oil.
Redline 75W90 NS is a better choice with a very SMALL amount of
friction modifier added to keep the LSD happy.
This is my understanding and is what the people at Redline reccomend.
However, I have not been able to confirm that the 308 requires a
hypoid oil with any certainty.
You don't want to use an oil that is too slippery as the synchros
require a certain amount of friction to work correctly. Most gear oils
have friction modifiers added to them for the differential ... This
presents a challenge with regard to a transaxle.
YMMV,
Jeff
Sent from my iPhone
On Oct 18, 2007, at 7:24 PM, dhanda5 [at] comcast.net wrote:
Redline MTL gear oil
Sent via BlackBerry by AT&T
-----Original Message-----
From: "philville dejazzd.com" <philville [at] dejazzd.com>
Date: Thu, 18 Oct 2007 19:20:24
To:dave [at] davehanda.com
Cc:Ferrari list <ferrari [at] ferrarilist.com>
Subject: Re: [Ferrari] 308 mileage

  Michel
  Have you tried any of the super slippery goo stuff in that tranny
yet?
  Does any one on the list have any reccomendation for any that they
  have used in a gearbox....
  Philip "Phil" Tegtmeier
  39 Churchill Drive
  Elverson Pa 19520
  610.525.8949
  And, go to: ... PhilvilleUSA.com
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Re: 308 mileage	<– Date –> <– Thread –>
From: Robert W. Garven Jr. (rgarvengmail.com)
Date: Thu, 18 Oct 2007 22:43:42 -0700 (PDT)