1999-2009 [Subscribe to Daily Digest] |
[Main 95 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Re: 4 speed and 5 speed auto trans fluid Posted by Larry West [Email] (#1140) [Profile/Gallery] (more from Larry West) on Fri, 9 Sep 2011 06:56:24 In Reply to: Re: 4 speed and 5 speed auto trans fluid, Link, Thu, 8 Sep 2011 13:53:50 Members do not see ads below this line. - Help Keep This Site Online - Signup |
All Aisin boxes are not made alike...
From the Mobil 3309 web page:
"Mobil ATF 3309 is an exceptionally high-performance lubricant that meets original equipment manufacturers’ specifications for use in **CERTAIN** slip-controlled lock-up automatic transmissions manufactured by Aisin AW Co. Ltd." (emphasis added)
Both the 4-speed and 5-speed Saab 9-5 automatic transmissions are Aisin boxes, and they spec different fluids.
As Bret says, the auto trans is an EXPENSIVE part of the car. You're not going to gain any added performance by running something different in it, and you do run the risk of degraded performance, if not outright damage to the internals of the transmission. Saving forty or fifty bucks on auto trans fluid could cost you thousands if the wrong fluid damages the transmission.
ATFs are not like motor oils. You could run straight 30 weight non-synthetic oil in a Saab motor, and wouldn't do any damage, provided you change it frequently enough, don't overheat it, cool the motor & turbo properly, etc.. The same is not true of ATFs. Auto transmissions work with clutches and friction bands awash in ATF, and using the wrong ATF could damage the friction linings (think brake pad or clutch disc material) by eating away at the material, or they may not provide the manufacturer specified friction, and your trans will slip. This is especially true of older transmissions, where there was the "Dexron" camp (GM, Chrysler, etc.) and the "Ford" camp (Ford, Borg-Warner, etc.). You never want to put Dexron in a box that specs Ford Type F (like the BW 35 & 37 of the Saab 99 & 900), or v-v.
_______________________________________ Current: 2002 9-5 Aero Kombi Cosmic Blue 2000 9-5 SE sedan, Imola Red 1990 900S Rose Quartz, Auto Past: 1999 9-5 LPT Combi 1999 9-5 LPT sedan 2002 9-5 Arc 1990 900 5-speed 1986 900 turbo Convertible 1991 9000 turbo 1980 99 GLi 1986 900 turbo 1986 900 S 1991 900 turbo 1984 900 turbo 1976 99 GL
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.