I don't know about the Rodeo, but my parent's 93 Trooper has an O2 light.
It dutifully turns on every 90k miles. Not sure if the Rodeo has the same
instrument cluster and method of turning it off (assuming it's even turning
on for that reason), here's how I turned off their 93 Trooper's light.
I think it shows that as the recommended interval. Interesting thing is,
the 93 Trooper's manual says 90k interval. Our 94 Trooper manual says 90k
for the DOHC engine, but says nothing about the SOHC engine. The 93 has the
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