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spark plugs on 2004 Cadillac CTS

do i have to use ac-delco spark plugs? because everywhere i go they keep telling me i have too. what else can i change to improve my MPG i have the 04' V6 3.6L

Asked by for the 2004 Cadillac CTS
Yes, we use AC Delco plugs at your request. The best way to improve gas mileage is to keep your oil clean, change your air filter, keep your tire pressure at the proper PSI. Also not a bad idea to change fuel filter every 30,000 miles.

Chance Brown Owner
Fixcarnow Inc, 3405 Motor Ave, LA, 90034
310-558-9097
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