civic turbo running mobil1 HM 10-30w

[cpvue]

i've been lurking for a long time of BITOG. i can say that most of my long breaks between classes at the campus was taken up by reading on this forum. so i figured why not just join. before this all this reading i've always been changing my oil at the 3000mi/3month interval.

car is a 95 honda civic with a d16z6 with 213,xxx miles on it and homemade turbo set up. i've always ran it hard on HM valvoline 10-30w with a pureone filter for AAP until the current switch to mobil 1 10-30w HM with the pureone filter.

i'm more worried about the fuel dilution/oil shearing on the oil because i usually have to let it warm up to the bottom of the cold line before i drive it any where and i beat the snot out of it at the drag strip.

this car made frequent trips from akron, oh to ypsilanti, mi usually once a week in the summer months which runs roughly 400 mi on a two way trip and this doesn't include driving around town when i am up there. this is my daily driver until winter comes. i'm wondering how many miles i could possibly run on the oil with a lot of highway driving.

sorry for the long post.

 

[cpvue]

opps. i see typo's but i don't see an edit function? help?

 

[Dr_No]

The edit button is automaticly removed 3 minuites after posting.

 

[Drew99GT]

If your doing a lot of highway running, you could run the oil a bit longer, but depending on your fuel setup and tuning, like you say, you're probably dumping a ton of fuel through that little motor and diluting the oil. Getting a used oil analysis will tell you for sure, but I'd stay on the conservative side of oil change intervals, especially if all you have is like a fuel management unit.

 

[JAG]

Welcome and I ditto what Drew said. M1 10w30 HM is a good choice for your situation IMO.

 

[cpvue]

drew99gt, it's currently running on ectune (form of standalone). i like driving my civic instead of my accord because it sees roughly 40-45 mpg on the highway depending on speed.

i'm a little weary about the UOA because my oil drain line for the turbo is just a rubber hose with a spring in it to prevent kinks.

 

[coffee]

I would have stuck with the MaxLife 10w30 but the Mobil HM 10w30 is not a bad choice. Either way I would do 5k OCI's and that would be fine.

 

[Dyoel182]

Originally Posted By: cpvue
i like driving my civic instead of my accord because it sees roughly 40-45 mpg on the highway depending on speed.


Yikes. Exaggerate much?

 

[cpvue]

Originally Posted By: Dyoel182
Originally Posted By: cpvue
i like driving my civic instead of my accord because it sees roughly 40-45 mpg on the highway depending on speed.


Yikes. Exaggerate much?


no. it really does get 40-45 mpg on the highway and this is cruising at 70-75 mph it runs lean during part throttle when there is no boost. it's the way that it was tuned. a conservative tune with decent AFR's in boost and lean in part throttle/highway driving.

trust me i didn't believe it at first but i calculated it many times before actually believing it. i talked to the guy that tuned my car and he said that it was typical for my application for pretty good MPG on the highway.

 

[Bulli]

i can see him doing 40 mpg highway STOCk but not with a turbo.

 

[Dyoel182]

Even bone stock thats way out of spec for highway mileage. You're sure its not a case of different sized tires/wheels causing the speedo and trip odometer to be off?

 

[cpvue]

Originally Posted By: Bulli
i can see him doing 40 mpg highway STOCk but not with a turbo.


honda's come from the factory stock running pig rich. lean them out and then you get more mileage. makes sense doesn't it? i drive the car a lot in spring/summer/fall. i would know how many mpg i get.

granted, if i drive it like i stole it, mpg get down to 20's. i'm talking about highway cruising at part throttle where you don't see boost.

 

[cpvue]

Originally Posted By: Dyoel182
Even bone stock thats way out of spec for highway mileage. You're sure its not a case of different sized tires/wheels causing the speedo and trip odometer to be off?


if you google it about honda speedometers they are roughly off by 5 mph from the factory when you are at about 65-70 mph you could possibly be at 60-70 mph.

instead of running the honda issued 185/60/14 size i run a 185/65/14 to correct the problem. these are taken from tirerack.

http://www.tirerack.com/tires/Spec.jsp?m...re1=yes&place=7

so in truth my mileage should be higher with the stock issued tires.

i'm just saying it's what i get. i don't want to start with, "it's not possible with a turbo and that setup. stock cars can't get that.... etc."

i'm just here to state what car i have and oil i use and get opinions just like the rest of you that joined this site.

 

[BuickGN]

Originally Posted By: cpvue
Originally Posted By: Bulli
i can see him doing 40 mpg highway STOCk but not with a turbo.


honda's come from the factory stock running pig rich. lean them out and then you get more mileage. makes sense doesn't it? i drive the car a lot in spring/summer/fall. i would know how many mpg i get.

granted, if i drive it like i stole it, mpg get down to 20's. i'm talking about highway cruising at part throttle where you don't see boost.


I believe it. I can get 29mpg in the GN on the freeway which I found when I had to use it for work for a couple months with a 210 mile round trip every day. I leaned it to the point that it would surge and add just a touch more fuel. Ran premium gas and as much advance as possible without pinging. With proper tuning, and staying out of boost, the car will get just as good mileage after the addition of the turbo.

 

[cpvue]

i'm glad that another turbo owner/tuner on this site can agree with me.

buickGN, i always loved those GN's but i can neither find one or when i do find one, i can't afford it.

 

[Dyoel182]

Originally Posted By: BuickGN
With proper tuning, and staying out of boost, the car will get just as good mileage after the addition of the turbo.


But he's claiming better mileage than before the turbo was added. Quite a bit better in fact.

 

[cpvue]

Originally Posted By: Dyoel182
Originally Posted By: BuickGN
With proper tuning, and staying out of boost, the car will get just as good mileage after the addition of the turbo.


But he's claiming better mileage than before the turbo was added. Quite a bit better in fact.


civic ex's roughly run what? 30-36 mpg on the highway? add 4 mpg and what's so hard to believe? it's like driving a car at 55-60 mph on a highway that has a speed limit of 65. i'll almost guarantee you that you get better mpg. i'm just stating that it's what 'I' get.

it's a tiny turbo, a 14b off of a 1st gen turbo DSM. it's nothing compared to the size of a stock GN turbo.

 

[Merkava_4]

Originally Posted By: cpvue
honda's come from the factory stock running pig rich. lean them out and then you get more mileage. makes sense doesn't it?


How did you lean it out, did you reflash the PCM? Also, if you've got it leaned out, why are you worried about fuel dilution?

 

[BuickGN]

Originally Posted By: Dyoel182
Originally Posted By: BuickGN
With proper tuning, and staying out of boost, the car will get just as good mileage after the addition of the turbo.


But he's claiming better mileage than before the turbo was added. Quite a bit better in fact.


My knowlege of his particular car is not that good. What I do know is that there's usually a good bit to be gained by "tweaking" the factory tunes. Lean out the cruise fuel and write a timing map designed for 91 octane instead of having to be conservative incase the owner runs 87. What you end up with is a car that requires a higher octane and can sometimes be a little more "touchy" since it's tuned a little closer to "the edge" but in return gets better mileage. I have a small studder when I have to accelerate before it kicks out of cruise mode due to the super lean mixture. This is fine for me but most people would find it annoying.

 

[BuickGN]

Originally Posted By: cpvue
i'm glad that another turbo owner/tuner on this site can agree with me.

buickGN, i always loved those GN's but i can neither find one or when i do find one, i can't afford it.


Thanks! I got lucky to find mine when the muscle car market was in a slump for $3,600 in average condition. I've come close to putting a bullet through it a few times but overall it's been fun.