My Asin Warner TF71-SC requires an AW-1 ATF. There's a handful available here. The cheapest being Comma MVATF Plus. Comma is a well respected oil manufacturer here in the UK, they have a few approvals on some of their oils but not a huge amount. My only Concern is the size of the performance profile and whether or not it would be a compromise on performance. My plan is to do a drain and fill (approx 4-5 litres) every 20k. I'd love to do a full flush with Amsoil SS ATF (ATL) but it's just out of my budget. It would cost me Â£300 to do a full flush and Â£120 for every drain and fill. Compare that to the Comma above, a flush would cost Â£75 and a drain and fill Â£23. Does anyone know if there is any alternative specifications I could have a look at that would exceed or reasonably match what is required by AW-1? Something like Toyota TI-V or WS, JWS 3324 etc.