- #102 of 164
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Re: Interstate MPG [rmhockman]
by amiliv
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Apr 19, 2008 (10:16 pm)
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Replying to: rmhockman (Dec 20, 2007 8:56 am)
I'm also a firm believer in synthetic oils. However, I was told by some mechanics that I should stick with "plain" oils for first few oil changes, to allow machine to brake in. Is there any truth in this?
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- #103 of 164
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Synthetic VS breakin
by 1trulove
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Apr 20, 2008 (4:47 am)
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Response to amiliv: Yes there is truth in the need to break in a new motor. Some engine parts are not perfectly matched. Break in is the removal of some metal as the engine parts "seat" to each other. While minor, this process is necessary to remove friction and create a smooth running engine. Synthetic oil so slippery it will only extend this process using expensive oil. Also since the original oil becomes contaminated with removed metal particles, an inital oil change should be done at the 3,00 to 3,750 mile interval. I chose to run "dyno" oil again for another 3,000 before changing to synthetic. Most sources recommend 5,000 to 7,500 miles before the change over.
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- #104 of 164
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11 months, 11,000 miles logged
by carbuyer11
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May 06, 2008 (7:07 pm)
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Averaging just under 18 MPG on our AWD Veracruz Limited. Highway trips usually achieve low 20's. Decent but I was expecting a little more on average. At least it's achieved on regular fuel.
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- #105 of 164
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Re: 11 months, 11,000 miles logged [carbuyer11]
by 1trulove
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May 07, 2008 (11:49 am)
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Replying to: carbuyer11 (May 06, 2008 7:07 pm)
When you say "highway trips" how close to 65 mph to you cruise? Anything over that will reduce mileage, so the low 20's at high speeds with AWD isn't that bad.
Check you tire pressure also, increasing the:psi (but not over-inflation) will also help mileage, particularly on the highway.
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- #106 of 164
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Re: 11 months, 11,000 miles logged [1trulove]
by lmf4159
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May 07, 2008 (12:06 pm)
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Replying to: 1trulove (May 07, 2008 11:49 am)
I am only getting 15.6 on the average for the past 10 fill ups. It is an 08 FWD that I have had for 2/3 months. My average speed is 25 due to driving mainly around town with lots of stop and go traffic. I go for my first oil change soon as I have just under 3000 miles. My tires are inflated to 35. Does anyone else have such low MPG. I feel like I drive pretty evenly with a light foot. Any suggestions to improve MPG would be appreciated. Regarding oil, should I request a specific kind and not go with synthetic until 7500?
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- #107 of 164
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Re: 11 months, 11,000 miles logged [lmf4159]
by jbetten
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May 07, 2008 (5:07 pm)
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Replying to: lmf4159 (May 07, 2008 12:06 pm)
I feel your pain. My wife drives mostly in town with lots of stop and go (picking up - dropping off kids). We're are getting between 13 - 15 MPG after about 600 miles. I know its really new, so there may be a bit of loosening needed in the engine. She if not "light footed" at all (I keep nagging - though), so this doesn't surprise me, but I'm sure we we were getting 16 - 18 MPG in our Honda Oddyssy. It seems that the first gear in the VC is rather low, not suprising with 6 gears to go through, but this doesn't help MPG any. This will rev up the engine quickly for speed, but also suck gas, if abused. Our tire are also at 35 PSI, which I think is good for better MPG. I wouldn't go higher though. I don't feel that the oil type will affect MPG much, but I personally wouldn't switch to syn before 10K miles. If you do, then extend your oil change interval accordingly (5K - 6K miles). Syn oil is good for this interval unless you do REALLY hard driving / temp conditions. As far as geting better MPG, you could use the "manual" shift mode and start out in gear 2 from a stop, and shift more quickly than auto mode would (lower RPM). This would take practice, especially getting used to shifting the AUTO-manual! But the point is that shifting at lower RPM will use less gas. Accerate slowly from stops and coast (long before you ge to a red light) like you are on a mission to save gas! This is about all you can do with a 4 - 5K lb car with a big engine to save gas. The best thing to do is drive in the 45 - 55 MPH range with minimal changes in speed. Doing this consistantly will get 20+ MPG. Good luck and enjoy!
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- #108 of 164
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City vs Highway
by 1trulove
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May 16, 2008 (10:45 am)
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All of lmf4159's comments were spot on. Keep the tire pressure up over 35 psi and go easy on the gas is the best action for city economy. I too don't know if synthetic will help with city gas mileage, but it will help the longevity of your engine. Since Hyundai allows 7,500 mile oil changes, it makes sense if your not driving in dusty or salty air. It will help on highway trips too. This is a good time to add that Hyundai should make a Hybrid - they are very efficient for city driving and make sense if that is what to predominantly do.
Final question - has anyone tried an air filter upgrade, or a more advanced air intake system? Some by Voilant, K&N, etc. say that they can inmorve both power and economy.
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- #109 of 164
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Re: City vs Highway [1trulove]
by posystm
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May 21, 2008 (10:36 am)
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Replying to: 1trulove (May 16, 2008 10:45 am)
K&N now has an air filter for the VC.
I have 13,000 on my 07 VC SE FWD, I have never reset the MPG on the computer, it shows 17.8 MPG. That is with 50% highway, 25% suburban, 25% New York City(Stop and crawl). I think the MPG has stabilized, and now am going to try the K&N air filter to see if that helps any. At this point price wise for gas, a 5% increase would be nice.
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- #110 of 164
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Re: City vs Highway [posystm]
by steve_ HOST
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May 21, 2008 (10:41 am)
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Replying to: posystm (May 21, 2008 10:36 am)
A typical interval for an air filter change is 15,000 miles. It'd be nice to see you put a paper filter on for a few thousand miles and compare that mpg to an oiled filter.
Otherwise skeptics like me will just figure any new filter is going to help your mileage.
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- #111 of 164
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Re: City vs Highway [steve_]
by posystm
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May 21, 2008 (10:51 am)
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Replying to: steve_ (May 21, 2008 10:41 am)
Good point Steve. Im bringing it in for the 15k and to resurface my rotors (AGAIN) in a week or so, i'll try it out for 3k mi, then try the K & N.
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