My Toyota service department says they’ve noticed that over time gasoline from Costco tends to cause more wear on engines because it doesn’t have additives like techron or techroline found in some brands of gasoline like Chevron, Texaco or Mobil. Does this make sense?

Costco versus and other gas brands

ok4450 April 18, 2012, 10:00am 3

You’re being fed a line of BS by the dealer. No doubt a service writer was the one telling you this.