Hot oil smell on Toyota Camry V6

crcc
Wed, 02 Jan 2013 16:39:35 +0000
Maintenance/Repairs

I have a 2002 Toyota Solara with 195k miles, and it frequently gives off a hot oil smell as though oil or trans fluid is on a hot surface, but I cannot find any such thing through a visual inspection. About the time this started, the check engine light came on and stayed on until I replaced the upstream O2 sensor.
I had hoped there was some connection, but the sporadic smell has continued, so apparently not. Is there some other explanation, or should I keep looking for a leak somewhere on the outside of the engine?

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