Old man at the Benz dealership says he’s been driving the same car for a long time and usually only puts in 87 octane in sprinkled with 91 every few times. What problems could this cause? Do I have to put in 91?

Disclaimer: I’ve owned (paid off) the car for 6 years and do put in 91, but trying to cut costs.

  • 20w261@alien.topB
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    1 year ago

    If it’s newer and has active knock sensing/retard

    My 1980 Dodge had that. Never heard a ping from it. But that doesn’t change the fact that the car itself was junk, a perfect example of why Chrysler almost went out of business. Bumper to bumper failures and defects.