Fuel average after 5W30 oil

[chaudhrysarmad]

Have you considered taking your foot off the throttle? I only get 12 mpg if I am absolutely hammering it and I've run 5w-30 since the first oil change.

I’m very lite footed smooth operator. Never drove above speed limit. Never got any ticket or speeding ticket in my 30 years of driving, specially when you live in New York City. 99% of time me and my mom who is 80+ years old travel together. So I have to be very cautious due to her age. Only once I did hit red line, my max rev is 3k.

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[chaudhrysarmad]

Thanks everybody for taking your precious time to work on issue. I’ll take it to Dealership near me Bay Ridge Honda on Monday and let’s see what words they have for me. Give you update as soon as possible.

 

[WOPSiWOT]

Thanks everybody for taking your precious time to work on issue. I’ll take it to Dealership near me Bay Ridge Honda on Monday and let’s see what words they have for me. Give you update as soon as possible.

I wouldn't take it to the dealer and tell them you put 5w-30 and ask them about fuel economy. At best they are going to tell you it is because of the oil and at worst they might flag you. Bottom line, you aren't going to get any answers. Run another tank of fuel. Something was wonky with your recording or the car's or the way you were driving the car (lots of idling).

 

[Chilly613]

Did you take a bunch of short trips to get the 12.5mpg? If so that would explain it, shorter trips will kill your fuel economy. Dealer probably won't help you much with that matter, and will just blame that you didn't use the "recommended" 0W-20.

 

[cryptolime]

Not sure if you meant low loads or low RPMs, but there is oil that controls low speed preignition, if you used a 5-30 that wasnt right for a little turbo motor then you can definitely get some preignition with boost at low RPMs (under 3k or so).

Oil viscosity alone does not make an oil better at controlling LSPI; rather, the specific chemical additive package—specifically lower calcium and higher magnesium detergents meeting the API SP or ILSAC GF-6/GF-7 standards—is what prevents low-speed pre-ignition. [1, 2, 3, 4]

Key Factors in LSPI Control

• • Additive Chemistry: `“Calcium (detergent) increases LSPI events dramatically. Magnesium (detergent) decreases LSPI events dramatically.”, as noted on BobIsTheOilGuy. Modern formulations reduce calcium and substitute alternative detergents.
  • Industry Standards: Always select oils carrying the API SP specification or ILSAC GF-6/GF-7 ratings, which explicitly require passing rigorous LSPI engine tests (such as Sequence IX).
  • Viscosity Role: While some research indicates thinner or lighter oils can slightly influence how much oil film passes by piston rings into the combustion chamber under specific conditions, changing the viscosity grade (e.g., swapping a 5W-30 for a 0W-20) is secondary to using an oil with the correct anti-LSPI chemical formulation specified by your vehicle manufacturer.

I used Pennzoil Ultra Platinum which definitely meets minimum standards. i don't even know where you could buy an oil that doesn't meet modern standards. Just sharing my experience. Not looking to get into another oil debate.

 

[chaudhrysarmad]

I wouldn't take it to the dealer and tell them you put 5w-30 and ask them about fuel economy. At best they are going to tell you it is because of the oil and at worst they might flag you. Bottom line, you aren't going to get any answers. Run another tank of fuel. Something was wonky with your recording or the car's or the way you were driving the car (lots of idling).

You’re right, i think have to run another fuel tank. I always use 93 but at this time I’ll try 91.

 

[chaudhrysarmad]

Did you take a bunch of short trips to get the 12.5mpg? If so that would explain it, shorter trips will kill your fuel economy. Dealer probably won't help you much with that matter, and will just blame that you didn't use the "recommended" 0W-20.

I have lot of short trips, sit in traffic for longer period of time due to heavy congestion. But this is my time I saw 12 mpg number after owning FK8 for 4 years and FL5 for 3 years. Driving habits are same, but now I thing i have to switch 93 to 91 and see what happen? And thanks for reply

 

[Higgs Boson]

I used Pennzoil Ultra Platinum which definitely meets minimum standards. i don't even know where you could buy an oil that doesn't meet modern standards. Just sharing my experience. Not looking to get into another oil debate.

I use Pennzoil Euro Spec Platinum 5/40 in almost all my cars (I use C40 GT Red Label in my Spyder RS because I kinda have to), I am not an oil debater, lol. Even using 5/40 in the Civic I get no knock and can still knock out 30 MPG if I don't lay into it.

 

[Spart]

i don't even know where you could buy an oil that doesn't meet modern standards.

One place to start would be your local Amsoil peddler.

 

[cryptolime]

One place to start would be your local Amsoil peddler.

lol. even the oil they sell at Dollar General has API certs. and, yea, i know, many boutique oils aren't certified but they should still protect against LSPI.

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