slownrusty Posted February 19, 2005 Share Posted February 19, 2005 Hi Gang - I have a 5speed with over 167,000 miles that has a 2nd gear that has to be nursed in, all other gears are perfect BTW. I am sure that if I blend some synthetic with regular 75W90 it will help...has anyone experimented with this type of concoction. Or should I run just straight Amsoil Redline Synthetic? When the tranny is cold..it is worse. I replaced the tranny oil a few weeks ago with brand new Valvoline Performance 75W90 and it did not really help. Luckily the old oil did not have any metal shavings suspended. Would love to hear some feedback. Thanks - Yasin Quote Link to comment Share on other sites More sharing options...
JMortensen Posted February 19, 2005 Share Posted February 19, 2005 50/50 SWEPCO 201 and ATF is my preferred blend. Quote Link to comment Share on other sites More sharing options...
Hugh Posted February 19, 2005 Share Posted February 19, 2005 I love redline in my trannies. Just don't use shockproof, as it will make the synchros worse. Some regular redline MT would work nicely. Quote Link to comment Share on other sites More sharing options...
Synlubes Posted February 19, 2005 Share Posted February 19, 2005 Amsoil 75W-90 Severe Gear Lube No need to mix anything! Life is full of choices Quote Link to comment Share on other sites More sharing options...
Cody 82 ZXT Posted February 20, 2005 Share Posted February 20, 2005 It's the T-5. Right? If so then it's supposed to run ATF. I've run both Mobil 1 ATF and Redline with good results. With the ATF in you'll see that the car will shift even when cold. Quote Link to comment Share on other sites More sharing options...
EZ-E Posted February 21, 2005 Share Posted February 21, 2005 Im currently running 75/90 Mobil 1 synthetic in my BW T-5, should I not be running that, or should I change it out for the ATF? Which should I use? What brand ATF if that is what is required? Quote Link to comment Share on other sites More sharing options...
Heavy Z Posted February 21, 2005 Share Posted February 21, 2005 If it's for an L6 or a non-wc T5 then gear oil is fine. If a wc T5 then Amsoil, Redline, or Mobile1 atf all work well. Quote Link to comment Share on other sites More sharing options...
Cody 82 ZXT Posted February 21, 2005 Share Posted February 21, 2005 I did some reasearch on this about a year ago and all T-5's use ATF. Dexron Mercon III. Even after I had mine rebuilt last year the place made sure that I knew that the T-5's used ATF and not gear oil. Quote Link to comment Share on other sites More sharing options...
Heavy Z Posted February 21, 2005 Share Posted February 21, 2005 I did some reasearch on this about a year ago and all T-5's use ATF. Dexron Mercon III. Even after I had mine rebuilt last year the place made sure that I knew that the T-5's used ATF and not gear oil. Cody, nwc T5s do take gear oil. Read this: "ALL World Class T-5 use ATF oil and NOT heavy gear oil or Redline MTL! All NON-World Class T-5 use 70 wt gear oil. It is because there is no bearing under each gear and the bronze synchro rings that the NWC use the heavy 70w gear oil." http://www.moderndriveline.com/Technical_Bits/t5_history.htm Quote Link to comment Share on other sites More sharing options...
slownrusty Posted February 21, 2005 Author Share Posted February 21, 2005 This is not on a BW T5...just a regular 5speed guys. Thanks for the replies so far. Yasin Quote Link to comment Share on other sites More sharing options...
Guest De Schmaydee Posted February 26, 2005 Share Posted February 26, 2005 ...this has been talked/argued a lot..... i had my my T5 rebuilt and filled it up w/B&M trick shift atf.....the tranny was loud and had very "knotchy" feel to it.....after a while i had it drained and refilled w/mobile 1 synthetic gear oil... it shifts better and is quieter....just my 2¢ theres nothing thats gonna fix the tranny (that can be poured into it) no matter what anybody says...might as well get another or tear down what you've got and fix it before it goes out (you know it'll go out at the worst possible time)......roger at zbarn rebuilds them (the nissan trannys)....good guy to deal w/ ......s Quote Link to comment Share on other sites More sharing options...
Pop N Wood Posted February 27, 2005 Share Posted February 27, 2005 I changed the gear lube in my stock Tacoma truck at 50 thousand miles, and first and second gear started getting hard to shift into. Especially when cold. Finally swapped to Mobil 1 synthetic. Let's see what happens next time it gets cold. Quote Link to comment Share on other sites More sharing options...
awd92gsx Posted March 1, 2005 Share Posted March 1, 2005 I'd head over to your local GM dealer and ask for some GM Syncromesh. It does wonders for DSM's...might help out your Datsun unit also. It is cheaper than Redline and has less instances of bearing failure while offering similiar, if not better, effects. Quote Link to comment Share on other sites More sharing options...
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