I have a Tremec TR-3650 that has exhibited some issues with the blocker ring jamming up for first gear. According to others with the same transmission, this is "normal". This transmission has been used for over 6-7 years in the market and has been plagued with some of the same problems.
The manufacturer claims that synthetic ATFs like Mobil 1 ATF are "too slick" for the synchros and blocker rings to catch, and they recommend non-synth Texaco / Havoline Mercon ATF. Some people claim that Royal Purple Synchromax works great, others said it doesn't make a difference, while others claim GM Synchromesh / Pennzoil Synchromesh worked great. The Tr-3650 uses "composite blocker rings" and paper-lined synchros, so gear oil is out of the question.
I suspect it could be a matter of the viscosity of the ATF when it is cold and at operating temperature. Does anyone know what the thickest Mercon-spec ATF is, or perhaps could recommend a solution? I would prefer a full synthetic for a longer lifespan in hot environments.
The manufacturer claims that synthetic ATFs like Mobil 1 ATF are "too slick" for the synchros and blocker rings to catch, and they recommend non-synth Texaco / Havoline Mercon ATF. Some people claim that Royal Purple Synchromax works great, others said it doesn't make a difference, while others claim GM Synchromesh / Pennzoil Synchromesh worked great. The Tr-3650 uses "composite blocker rings" and paper-lined synchros, so gear oil is out of the question.
I suspect it could be a matter of the viscosity of the ATF when it is cold and at operating temperature. Does anyone know what the thickest Mercon-spec ATF is, or perhaps could recommend a solution? I would prefer a full synthetic for a longer lifespan in hot environments.