It takes 5w30 and 6 quarts.
2
2
6 cylinders
A 1999 Lexus GS300 requires 2.0 quarts of automatic transmission fluid. Factory recommendation is Toyota T-IV ATF.
i own a 2005 lexus gs300 the old form and i noticed 3 catalytic convertors 2 in front manifold and the last one is at the centre of the car.
My '93 has 230,000 miles so far.
Two and it costs around $125.00 each.
If all goes well you can do this in about 90mins to 2hrs.
4 cylinders
locate cylinders 2000 rx300?
Lexus dealers call for 6.1 but 6 will be fine