hi all iam new to this forum. Just needed some advice on transmission oil on a lexus gs300 1998. the oil was low about 2 weeks back so i topped it up with dextron and later read on one of the forums that this oil does not suit the lexus and iam supposed to use the oil supplied by the main dealers. would this make much of a difference to my car now that ive already done it. should i drain it all out and refill it with the toyota transmission oil?. thanks

I'd use only the Toyota Branded fluid that Toyota & Lexus both use mate.....