Originally Posted By: lexus114
Originally Posted By: mac9128
We had a 1998 Lexus ES300 in the family for quite a few years and ran it from 60,000-200,000 miles without any serious problems. Needed a cat around 175 as well as new shocks. Other than that always ran great, and from 75k on always saw Valvoline max life syn-blend at 3-5k oci's. I can't say there was no sludge but I can say it always ran smooth and never gave us any problems, really reliable car.
You were most likely using Regular unleaded fuel for that to happen.
Yupp was always run on 87. My father doesn't believe in the need for premium gas, i dont know why. He just started using 89 instead of 87 in his G35 that hes had for a couple years. Will never go 91 or 93