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At 95,000 kms (60,000-ish miles) I can really notice that pesky rattle when poking the throttle during higher-load/lower RPM situations (i.e 65 mph on the highway, 5th gear, passing truck up slight hill), even though I replaced the NGK's about 5,000 kms (3000 miles) ago.

Has anyone else with roughly the same mileage noticed this? The car is bone-stock and I've always run 87 octane.

I'm comtemplating running a cooler thermostat during our summer months, then back to the stocker for winter.

Any comments/suggestions would be appreciated...
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