I just switched to this yesterday to see if the mpg claims are true so i will keep you guys posted if i see an increase over my usual numbers. I noticed the motor sounds more quiet so maybe the low friction weight is doing its job. I havent noticed any performance loss either. I have been pulling 26mpg spirited mix driving, and 28 mpg regular mix driving so if this puts me at 30 i will be pleased.
Ordinarily I wouldn't comment on someone's engine oil choice, simply because EP3 owners seem to have fixed opinions WRT their engine oil choices, as reflected by this board. That said, IMHO back-specing an EP3 (or any Honda, for that matter) to a lighter weight oil in anticipation of a potential gas mileage increase may not be such a good idea.
As I'm sure you know, Honda recommended 5W-20 weight oil to ensure its fleet-wide MPG average would meet (and exceed) an EPA standard. Honda did that to receive millions of dollars in Federal funds (tax incentives) and to avoid similar fines for failing to meet those standards. That weight oil is fine if you drive conservatively, as most Honda owners do. (Auto tranny, 2K-3K rpm, etc.) However, as you also likely know, HMC continues to recommend 5W-30 weight oil for all of higher performance K-series motors (and 10W-30/10W-40 for the S2ks). Only the latter weights are HT/HS HTO-06 certified or capable of meeting that standard. Also, going from 26 or 28 mpg to 30 mpg via an engine-oil weight change -- i.e., 5-10% mpg gains -- would be considerably more than what HMC has been able to achieve in the past 10 years with regearing and compression ratio changes. As an alternative, short-shifting will net you what you want without the potential for camshaft galling or, eventually, piston slap.
Last edited by Mechanic; 12-08-2010 at 05:36 AM. Reason: typo
You will be replacing the engine in short order using that worthless swill!
ALL advice issued with this "Disclaimer"
Tim "the Toolman" Taylor is my HERO ! ! !
"Labor Unions are Domestic Terrorist orgainizations"
idk i switch from royal purple to mobil 1 and i dont like it i can like feel my engine more it dont feel smooth when i press the gas pedal. :( Im gonna try Eneos next oil change
get a used oil analysis afterwards
I seen and felt a significant difference in engine performance going from a mobil1 to Royal Purple and Amsoil. The Govt may allow mobil1 to be labled as a synthetic, but it is far from a true synthetic.
ALL advice issued with this "Disclaimer"
Tim "the Toolman" Taylor is my HERO ! ! !
"Labor Unions are Domestic Terrorist orgainizations"
i drove pretty hard on a full tank of 89 octane and got 26mpg. then the next tank with the same fuel with conservative driving was 27mpg. I then got 28mpg on 93 octane and im on another tank of 93 again to check the results. the oil level has been the same so i guess i just had to put more in it after the first drive because it went down to the min level once but its fine now.
still, keep an eye on it. i find my car feels better when its 1qt low. but obviously if i stayed with that idea, my motor would be gone.
lol, so everytime i feel like im making more power, i pour more oil in to it and we're back to normal =[
My legacy gt was fed a steady diet of mobil 1 for 70 something thousand miles by the original owner. I had consumption issues and used rotella for 6k, til it spun a bearing. Every bearing was down to copper. I will never use mobil 1.
I've been running 0W-20 since this December. Makes a HUGE difference, IMO, when starting the car when it's -20F to -35F out. When it's that cold I'm happy to get 25mpg around town and 30mpg interstate. When it warms up I plan on splitting the difference (from the specs I've looked at) between 5W-20 and 5W-30 by running 0W-30. Had my cam replaced last summer on a steady diet of 5W-20 but the more I've read from people on which cam (exhaust or intake) and which cylinder the lobe went bad on, I can't imagine it's an oil issue. I had one lobe go bad on 2 cams. And that lobe was TOAST. If it was the oil, and not metallurgy, wouldn't more than one lobe have had at least some scuffing or marks? That's why I'm not totally sold on oil being the culprit.
what about air temperature? humidty? tire pressure? are you driving the same route? elevation changes? these are all factors in gas mileage also. youll never get 100% results unless in a controlled environment..like a dyno.... go sit on a dyno till the car runs out of gas driving one way..then drive conservative next time.Originally Posted by VividSI
be jealous :P
everytime you change your oil you gain back what HP you gradually lost with the dirty oil
nothing bad is going to happen to the motor, and if it does ill get another one. mobil one is good oil, still testing.
To get another 1 mpg are you willing to shorten the motor's life? I'm really big on mpg but I wouldn't use the stuff. You might do a little research first on Honda forums and http://www.bobistheoilguy.com/cms/.
The 2011 Acura TSX K series and J series motor has switched to it claiming less friction and +1mpg city and highway. besides that mobil one's website said for my motor 5w20 and 0w20 are safe and it covers warranty protection for Honda. If anything it will increase the engine life as Acura claims but i have yet to prove its worth to permanently switch, its probably not enough of a increase to make a big deal, driving style has more of an impact but i will post my numbers when i get them.
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