» Site Navigation | | » Recent Threads | | | 1999 M3 Swap 09-07-2023 10:10 PM 06-01-2024 03:04 PM 7 Replies, 409,864 Views | | My 318ti build 05-21-2024 04:48 PM 05-28-2024 06:42 PM 1 Replies, 3,664 Views | | OMG!OMG! 05-28-2024 08:53 AM 05-28-2024 08:53 AM 0 Replies, 1,473 Views | | | | | 12-12-2006, 01:09 AM | #1 | Senior Member Join Date: Jan 2006 Location: Philly, PA Posts: 189 | ATF-L1 alternate & Good Differential Fluid ? I did a search in here and on google before posting but I was not able to make a decision so I come to you all. I need help, my 98ti has 209K miles, I want to change my manual trans fluid and my differential fluid. I don’t have the money to spend on the BMW lifetime ATF but I’ve heard that other brands work, if anyone knows can you list them. I also want to change my differential fluid; it has synthetic blend in it now I’m looking for a fluid that has worked well for others. | | | 12-12-2006, 01:18 AM | #2 | doesn't care about you. Join Date: Aug 2004 Location: Denver, CO Posts: 3,925 | Quote: Originally Posted by adempster1 I did a search in here and on google before posting but I was not able to make a decision so I come to you all. I need help, my 98ti has 209K miles, I want to change my manual trans fluid and my differential fluid. I don’t have the money to spend on the BMW lifetime ATF but I’ve heard that other brands work, if anyone knows can you list them. I also want to change my differential fluid; it has synthetic blend in it now I’m looking for a fluid that has worked well for others. | Royal Purple SynchroMax for the tranny. Royal Purple MaxGear for the differential. MaxGear works with the LSD without any additives. I switched from Mobil 1 to Royal Purple and I can feel a difference in the gear box. __________________ '99 Dinan M3 | | | 12-12-2006, 02:06 AM | #3 | Senior Member Join Date: Jan 2006 Location: Philly, PA Posts: 189 | Thanks Dusten, I did hear about the Royal Purple before but I needed to know from a TI owner. Thanks again, I’m going to do a search and order me some. | | | 12-14-2006, 11:19 PM | #4 | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 | Redline D4 ATF for the tranny, and they make a few gear oils for the diff, depending on if you have a LSD or an open diff, and the oil weight you want. (By the way, Redline D4 is the only ATF with a gear oil rating for wear protection- I checked them all. No others with a gear oil rating regardless of price.) I also use the D4 ATF in my Land-Rover R380 tranny, which runs excessively hot, and will totally cook conventional ATF in about a week in August... D4 still smells sweet after a year "driving the globe". In the BMW you can get away with changing the fluid every other year, assuming you drive it all the time. I go about every third year, since I drive the car less often. Same with the diff; however a LSD that sees track time may need a more frequent change interval, particularly with a clutch-type LSD. | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | |