Is it true that our auto transmissions don't reach full cooling capacity until lockup in 4th gear? I have not got my Posi-lock installed yet and I doing a tow with my travel trailer this weekend. So when going up a paved steep road that would normally be in second gear for a few miles. Should I disconnect the vacuum line and run in 2 wheel drive low range in 4th or 5th gear for optimum cooling of transmission? I don't have a Trans temp gauge yet to monitor.
Is it true that our auto transmissions don't reach full cooling capacity until lockup in 4th gear? I have not got my Posi-lock installed yet and I doing a tow with my travel trailer this weekend. So when going up a paved steep road that would normally be in second gear for a few miles. Should I disconnect the vacuum line and run in 2 wheel drive low range in 4th or 5th gear for optimum cooling of transmission? I don't have a Trans temp gauge yet to monitor.