Results 1 to 3 of 3

Thread: Another redundant statement in owners manual.

  1. #1
    Senior Member
    Join Date
    Aug 2020
    Location
    Canada
    Posts
    126
    Thanks
    16
    Thanked 41 Times in 34 Posts

    Another redundant statement in owners manual.

    From micras owner manual:
    “ Using unleaded gasoline with an octane rating lower than recommended can cause persistent, heavy “spark knock.” (“Spark knock” is a metallic rapping noise.) If severe, this can lead to engine damage.If you detect a persistent heavy spark knock even when using gasoline of the stated octane rating,or if you hear steady spark knock while holding a steady speed on level roads,it is recommended that you have a NISSAN dealer correct the condition. Failure to correct the condition is misuse of the vehicle,for which NISSAN is not responsible. Incorrect ignition timing may result in spark knock,after-run and/oroverheating, which may cause excessive fuel consumption or engine damage. If any of the above symptoms are encountered,have your vehicle checked. It is recommended that you visit a NISSAN dealer for servicing.

    However, now and then you may notice light spark knock for a short time while accelerating or driving uphills.This is not a cause for concern,because you get the greatest fuel benefit when there is light spark knock for a short time under heavy engine load.”


    First and second part of the statement doesnt go together.

    Hypothetically if we consider this scenario:

    What if you are driving to work at increasing steep angle? Lets say i live in area where to reach to work i have to drive 20km uphill. Angle starts to increase 1 degree at each km km and im carrying maximum recommended load in the vehicle and because of environment in that area there is wind blowing at 35-40km/h in opposite direction of my driving direction. So that means i have uphill+gradual acceleration to compensate for wind and increasing angle of the steep. It falls it first statement or 2nd? And am i now misusing the vehicle as per first statement in manual and am out of warranty?



  2. #2
    It’s just saying if you notice knock, increase octane rating.
    But you should not have a problem. It should kick down a gear.

        __________________________________________

        click to view fuel log View my fuel log 2015 Micra S manual: 7.7 L/100 km ... 36.8 mpg (Imp) ... 13.0 km/L ... 30.6 mpg (US) ...


  3. #3
    Senior Member MrMicra2015's Avatar
    Join Date
    Aug 2016
    Location
    Vancouver BC
    Posts
    883
    Thanks
    224
    Thanked 150 Times in 121 Posts
    but its designed for 87 octane and its the cheapest gas u can buy.???

    its saying a little pinging is ok but a big banging is gonna toast the bearings and no free engine 4 u

    or u could kick it down a gear..easier with manual


    Last edited by MrMicra2015; 03-22-2021 at 10:28 PM.
    2015 Micra S (manual)
    no A/C /no power options/ block heater/4x 2 Ohm speakers...all factory stock in 2015
    Feb 2015 build
    9,999 purchase price + tax..no additional 1600$ because it was a 2015 purchased in 2016
    so receipt says $8,399....+1600 .... so they look good i guess...for a brand new car!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •