Join Date: Apr 2010
Location: desert near Tucson
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Re: Radiator flush and spark plugs?
I usually try to stick to the recommended intervals. Somehow the plugs in our 2007 FJ slipped by us until a few weeks ago. About 110K, and the plugs were original - different brands on different sides as it came from the factory.
We had no driveability problems, but the gaps were HUGE - probably triple the spec. It does idle better - I had to relearn that I cannot feel the engine running at the stoplights!
Coolant done years ago.