I've always had oil changes done at the Lexus dealer, and he only recommends changing every 5k miles. Recently, I was at the Toyota dealer to get the timing belt replaced, and since the guy assured me that they use the same "Toyota" oil that Lexus dealers do, there would be no difference in an oil change either. So to save myself time, I went ahead and had that done also. Thing is, the sticker on my windshield now says my next oil change is after 3k miles.
Does this mean that the Toyota dealer actually used a different oil? or can I continue to go 5k miles between oil changes? FWIW, the car now has almost 100k miles. This is for a 1998 es300.
Thanks.