The banner above is an advertisment - if it asks you to download software, please ignore.
Site News -
7/1: Members: Log In to See Fewer Ads! |
5/28: SAAB Evolutions/TSN T-Shirts $14
[General |
Members |
C900 |
9000 |
NG900 & OG93 |
93 |
95 |
NG95 |
99 |
Sonett |
Vintage Models |
Clubs |
Other Cars |
FAQs |
Gifts |
Member Photo Galleries |
Member Directory |
Classifieds |
Manuals |
*Buddy Registry |
*Mileage Registry |
Polls |
What's New |
Raffle |
Photo of the Month |
Sponsors]
[Main C900 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Re: Mobil1 15W-50 in the tranny?
Posted by KeithG (more from KeithG) on Mon, 16 Aug 2004 05:03:29
In Reply to: Mobil1 15W-50 in the tranny?, MichaelH, Mon, 16 Aug 2004 04:44:21
Members do not see ads below this line. - Help Keep This Site Online - Signup
tranny oil is a bit of a black art. The OE fill was an engine oil 'back in the day'. Previously it was a 70w or so gear oil. Most focus on the viscosity, what really seems to matter is the additive package and most importantly the friction modifiers. You want a good quality oil that has minimal friction modifiers so that the pinion has adequate film strength and that the synchros work. THese are opposed requirements which is why this is such a black art. Racing oils generally have fewer fricton modifiers. I have not read of anyone putting a straight 40w or 50w in these yet. Some swear by RedLine MTL (manual transmission lube) others by Honda MTL and yet others by Amsoil Racing 20W50. I have used the amsoil racing 20W50 and had it in there for about 20kmi before i wrecked it. It was fine, but on very cold mornings (<30F) the first 2-5 minutes had less than stellar synchro actiion (Rrrrrink on 1-2). The '91 I just got has Redline MTL in it according to the paperwork. It is fine. I will have to see what happens this winter. I am leaning to replacing it with either Saab Synthetic Gear Lube or Honda MTL. On the other hand, the wife's 9k has Saab Synthetic in it and it is probably the best shifting Saab I have driven, but this is an apples/oranges comparison. One could assume that the synchro design is similar, but that would be an assumption.
$0.02, YMMV
KeithG
posted by 65.60.161...
Posts in this Thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
StateOfNine.com
![](/tsn/xyz/stateofninebutton.gif) |
SaabClub.com
![](/tsn/xyz/scnabutton.gif) |
Jak Stoll Performance
![](/tsn/xyz/jakstollbutton.gif) |
M Car Covers
![](/tsn/xyz/mcarcoversbutton.gif) |
Ad Available
![](/tsn/xyz/buttonavailable.gif) |
![](/tsn/images/tsnmap.gif)
Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right.
Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY.
Classifieds are to be listed in The Saab Network Classifieds pages.
This is a problem solving forum for over 250,000 Saab owners, so expect to see
problems discussed here even though our cars are generally very reliable. This is not an anything goes
type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the
Saabnet.com Mission and Purpose Page. Please remember that you are
not anonymous. Site Contact | Site Donations | Other Sites by SP -
Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot
Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all
the Site Membership Benefits!