Does it matter what level dexron ATF you use (manual trans fluid). 91 318is, bmw parts guy said I should use dexron IV or V, basically whichever was the newest.
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Either is fine however, I would strongly recommend Redline's MTL rather than Dexron.I'm Not Right in the Head | Random Rants and other Nonsense1st Order Logic Failure: Association fallacy, this type of fallacy can be expressed as (∃x ∈ S : φ(x)) → (∀x ∈ S : φ(x)), meaning "if there exists any x in the set S so that a property φ is true for x, then for all x in S the property φ must be true". -
The stuff that bavauto has? What makes it better? (just trying to find out)sigpicComment
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makes two of us ... pretty please
edit: I just read something one of the threads and i think the only difference is price? could be wrong and would love to be corrected.Last edited by EA8; 03-23-2009, 05:02 PM.Comment
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I've been looking like a maniac and I still can't find anything definite. I found what diff fluid to use, but I'm still mystified by the trans fluid.sigpicComment
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If you put Redline MTL in the manual transmission, it will shift much smoother and easier. Each gear can be selected with less effort. Especially so in the winter.Comment
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MTL just lubes better and makes the syncros work better but it costs a lot.Comment
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Redline MTL specifically is also known to help with the second gear syncho problems that a lot of e30 trannies have. Even though it costs a bit more, it is definitely worth it in the long run.
Also, some e30 manuals were specified to be filled with ATF. Apparently you can fill them with MTL with no downsides; ATF was just cheaper for the factory.Comment
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Great thanks everyone, I just ordered some.sigpicComment
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Bam//////// Successful thread...
sigpic 1987 325isComment
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The reason BMW used ATF was mostly for fuel economy, it's lubrication properties are fine for the syncro rings and pretty much for the bearings and gears in the orange label transmissions.
MTL is basically a synthetic GL4 with an additive package that is just about perfect for the syncros and better protection for the gears and bearings than Dexron.
This is off the path a bit but important none the less:
Never use GL5 in a BMW transmission! the friction modifiers will screw up the syncro rings (too slippery and won't grab the hub).I'm Not Right in the Head | Random Rants and other Nonsense1st Order Logic Failure: Association fallacy, this type of fallacy can be expressed as (∃x ∈ S : φ(x)) → (∀x ∈ S : φ(x)), meaning "if there exists any x in the set S so that a property φ is true for x, then for all x in S the property φ must be true".Comment
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