I've been using mine for three years but it's mostly a weekend/seasonal only car. Threw a code once last year. The cause was the little flapper valve wasn't making a good seal. Removed cap and worked the seal to seat correctly again. Took all of five seconds. No codes since. I like the convenience of filling up with this cap. My other three vehicles have caps but that's no big deal either screwing with them.
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"America.... still builds rockets!"
Vette: 355 cid, 400 rwhp
'13 CTS-V Coupe: 6.2L LSA, 556HP
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