Hello, There are many vehicles fitted with the AW 55-50 5 speed transmission. I know of Toyota, Lexus, Saab and Volvo. The fluid for these units must meet a JWS 3309 spec. It took time to see the spec appear on aftermarket bottles of fluid but today it's fairly easy to find. My goal with this poll is to tally how many people successful used ANY 3309 specced substitute for branded Volvo, Saab, Toyota, Vauxhall or other car company transmission fluid. I've used substitute fluids in 3 AW 55-50 trannies with great success. Anybody else? Thanks Kira