5w30
Here you go.http://my.is/forums/f67/is300-oil-change-guide-340749/
"This is how all Lexus's get their name. By the tank size. The IS300 has a 3-litre tank." It's for the displacement not engine oil capacity , it's a 3 litre engine the oil pan could be any size, depending on it's size and shape. Lexus DOES NOT name their cars after the tank size. The IS/GS/ES/LS denotes the chassis and the number, i.e. 300, 250, 350, 400, 330 etc denotes the SIZE of the engine. I'm pretty sure Lexus put only ONE size oil pan on the 3.0L engine. BTW, the 3.0 is derived from the Supra inline six.
5w30
lexus rx300 1999-2003
Vegetable.
Use exactly what is recommended by Lexus as listed in your owners manual.
Oil Filter 2003 Alero V6 3.4L part no. 3387
Honda civic 2003 -what is the best engine oil for hot weather?
Lexus uses Toyota oil filters for their vehicles, so yes, you can use Toyota oil filters for your Lexus.
The gear oil is not filtered.
Synthetic 0W30 if you can find it. If not use Synthetic 5W30
5w30