Just a word to all regarding Royal Purple Synchromax. I put this last August of 2008. This gear oil is the best I have ever used in any of my cars. And believe me I have tried a lot of them over the years. Winter is almost coming to an end and I have not had even one second gear crunch yet. Car shifts effortlessly even on a cold morning. If you need a good gear oil for your manual tranny, this is the product for you in my opinion.