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.

  • Well-Imma-Head-Out@alien.topBEnglish
    1·
    1 year ago

    Nothing serious, it’ll just pull timing under more intense load. If not being driven hard, I don’t think there’s any evidence that it hurts the engine.

    People who are saying “just follow the manual” are right, you should, but they aren’t providing any technical analysis and should generally be ignored.

    • promodsandimas@alien.topBEnglish
      1·
      1 year ago

      but they aren’t providing any technical analysis and should generally be ignored.

      why should they be ignored? they dont have to explain why, the “manual” says what is needed, so saying “follow the manual” is sufficient