Shell advertises and hands out flyers in quick service oil changes. They claim if you use Quaker State or Pennzoil, your vehicle will be warranty for 10 years or 250,000 miles. I use this oil and kept up all the paper work.
This happen 3 years ago, and as of today, I have received no warranty. The place in charge of doing the warrenty paper work, gives you the run a round.
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