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StarBear |
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#1
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,926 Joined: 2-September 09 From: NJ Member No.: 10,753 Region Association: North East States ![]() ![]() |
74 1.8 with original transmission.
What is the best fluid to use - either top off or replace? It now has a Swepco, though don’t recall which one (thought I wrote it in my notes but can’t find it). A small seal leak, so like to top it off at the start of each driving season. (IMG:style_emoticons/default/driving.gif) |
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technicalninja |
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#2
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,387 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region ![]() ![]() |
I have used royal purple atf in 901/911/915 boxes since mid 70's, it was a racing trick and still never see any wear in boxes when torn down even now. I'm not the only using it but see no need for using anything else. Let the criticism start. That is a "trick" that the OEMs went to as well. A box that has been 75/90w went ATF (about Year 2000?). The T56 (6 speed LS1-2) was ATF from the start. A hot trick for the Miata 6 speed (GL4 75/90) is to use the Ford "Unicorn juice" part# XT-M5-QS This is the fluid for the Ricardo gear box in the mid 2000 Ford GT. My Miata 6 speed was SO bad I had a full-on parts list for tranny rebuild. Out of sheer desperation I tried the Ford stuff (very ATF like) and it made the overhaul unnecessary! I wouldn't change a 914 over unless I thought I was heading for a rebuild. I WOULD try the Ford fluid BEFORE I removed the transmission... |
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