Last post on Oct 15, 2012 at 7:44 AM
You are in the Hyundai Sonata
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Hyundai Sonata, Sedan
#1724 of 3234 Re: '07 Sonata LX 3.3L engine noise [ray_h1]
Dec 15, 2006 (9:27 pm)
I started using Castrol GTX motor oil in 1968 with my 1968 Triumph GT6. Yes, it was available almost 40 years ago, albeit with only the now obsolete SC and SD specs. It was excellent oil even back then.
In my 2006 Hyundai I use 5W30 Mobil 1 and still stick to 3K/3mo intervals as it's my wife's car, and is generally only driven in town back and forth to work - we bought it in December 2005, and it only has 4,980 miles on it at the moment!
Ray's suggestion of using 10W-30 is a very valid one. A 5W-20 or 5W-30 oil uses a 5W base stock with VI's (viscosity indexers) to raise the viscosity to 20 or 30 at higher temps. A 10W-30 motor oil has a 10W base stock. It's the VI's in motor oil that causes problems, i.e. varnish, etc. The smaller the differential in motor oil, such as 10W-30, indicates lesser amounts of VI's. The move to 5W-20 and 5W-30 motor oils was based largely on the government mandated CAFE requirements, and thereby manufacturers need to increase fuel economy across the board - even if these oils only increase actual fuel mileage per vehicle by fractions of a MPG.
I suggest those who may be interested, go to Mobil's website and look at the specs of the various formulations of Mobil 1 synthetic. It's very interesting to compare specifically 10W-30 vs. 5W-20 and 5W-30. These documents are available in PDF form, and although filled with engineering data, the important information is rather telling for the interested consumer. The data tends to support Ray's position on 10W-30.
#1725 of 3234 Re: '07 Sonata LX 3.3L engine noise [w9cw]
Dec 16, 2006 (1:34 pm)
You did a superb and cogent review of my reasoning for choosing a 10W-30 synthetic blend* in my temperate SoCal climate. Salute!
*Phillips 66 TropArtic Synthetic Blend 10W-30 (also available in 5W-20 and 5W-30 viscosities). A little anecdote about an experience I had during a telephone call to ConocoPhillips' consumer hotline yesterday. I've been suspicious for some time that Ford Motorcraft motor oil is blended and bottled for Ford by ConocoPhillips. (Has anyone ever seen an oil derrick or refinery with "FORD" slathered across it? ) So, since the call would be in their nickel, I contacted CP. The person who answered identified herself as an "engineer". I asked straight up whether Motorcraft Premium Synthetic Blend was blended and bottled by CP. Her response was, "That is proprietary information." I responded, "OK, fair enough. But at the risk of pushing you on a matter you're understandably reluctant to openly discuss, would you have any further comment if I mentioned that on a recent trip to WalMart I noticed that, A) both Motorcraft and Phillips 66 TropArtic quart bottles were the same stubby design and, B) both carried identical format production/date coding alpha-numerics?" Her response: "Then, perhaps they could be from the same blender." I thanked her for her guarded candor and posed another question: "What's the approximate synthetic content in your TropArtic 10W-30 Synthetic Blend?" She: "Our 10W-30 viscosity motor oils have the least synthetic content of the three available viscosity grades we market. The precise content is proprietary information, but I will say that the 10W-30 version contains well in excess of 25% synthetic base oil stocks." This statement is significant since many name brand synthetic blends contain no more than 10% and few contain as much as 25% synthetic content. There's no legal requirement specifying synthetic content amount in syn-blend motor oils other than that there must be at least some synthetic content. I'm now convinced that ConocoPhillips' four synthetic blend brands (Phillips 66 TropArtic, 76, Kendall GT-1, and Conoco All Season) are the best kept motor oil secrets in America. For Motorcraft oil adherents, one of CP's own brands may well be identical other than Ford acting as an additional middleman.
#1726 of 3234 Re: '07 Sonata LX 3.3L engine noise [craigbrooks]
Dec 16, 2006 (9:00 pm)
Hi Craig got talk out of the injector cleaner, the salesman said I need better grade of motor oil so got some Valvoline oil 10W-40 and you know what ? There is no different ,it is still there the tick tick tick so I do think it is the injector ,so I will put the injector cleaner in after Xmas , but I say that the cleaner still will not help ,it maybe a thing I have to live with it and I can do that.
Yes do put some picture of your car on, I try to but could not get them on Forum so I put them in my album in carspace.
#1727 of 3234 Re: '07 Sonata LX 3.3L engine noise [jacknzone]
Dec 18, 2006 (8:45 am)
I was wondering about you and the cleaner. What is your carspace zip so I can look at the photos?
#1728 of 3234 Re: '07 Sonata LX 3.3L engine noise [w9cw]
Dec 18, 2006 (8:47 am)
A gold star from the teacher....very good. Now go to the head of the class.
#1729 of 3234 Re: '07 Sonata LX 3.3L engine noise [jacknzone]
Dec 18, 2006 (9:07 am)
Never mind Jack I found your site. I think I have an answer to your problem....they put the steering wheel on the wrong side! I'd bet the pistons are in wrong too. Are those cars in the pictures yours from the past?
#1730 of 3234 Re: Window rattels and noises [ray_h1]
Dec 19, 2006 (2:41 pm)
Does anyone else have their front and/or rear window and/or sunroof squeak or make noise?
I read somewhere on the web to have the dealership check the headliner clips.
I personally feel a car this new (07 with 600 miles) should not have this many moans and groans!
#1731 of 3234 Re: '07 Sonata LX 3.3L engine noise [jacknzone]
Dec 19, 2006 (2:48 pm)
I changed to the Castrol 5-30 and did notice a differnce. But on occasion the noise would come back. My car has 15400 miles on it. The occasion being yesterday and today and the day before...you get the point. Well I needed gas so I put a tank of 91 octane in, normally use 88 octane, and when I drove away the noise was gone. Sometimes my car sounded like a Volswagon TDI. Ray had mentioned preignition knocking before but I wasn't sure that was it. I will never doubt the master again. I hope this cures my problem. BTW, on my trip back to work the trip computer showed 29.7 to 30.1 MPG driving in city traffic. Never has done that before. I am going to see what happens. You might want to try a tank of high octane petrol in your rig. If I continue to get this good of mileage I just might stay with premium. If not and it does fix my noise I am going to ask my Hyundai dealer to look at it see if the timing can be adjusted or corrected so I can go back to 88 octane.
Welcome to my short list of friends!
#1732 of 3234 Re: '07 Sonata LX 3.3L engine noise [craigbrooks]
Dec 19, 2006 (5:24 pm)
I changed to 10w40 Valvoline and it did not make any difference, over here we got 91 and 95 octane .I have been using 91 oct and I have been getting 24 mpg . I give 95 octane ago next full up . I say it will take me two week to get a full tank of 95 as only use about 1/2 tank per week , ITs not a big thing this noise but still would like it gone if possible. I got same new pic of motor , I will put in Album ,but no sound!
#1733 of 3234 Re: '07 Sonata LX 3.3L engine noise [craigbrooks]
Dec 20, 2006 (12:27 am)
)) "Well I needed gas so I put a tank of 91 octane in, normally use 88 octane, and when I drove away the noise was gone. ... I am going to ask my Hyundai dealer to look at it see if the timing can be adjusted or corrected so I can go back to 88 octane." ((
The timing chain would have no effect on pinging - it only controls the opening and closing of the intake and exhaust valves, nor is there a mechanical, engine-driven ignition distributor mounted to these engines to manually reset the ignition timing. Instead, the ECM (computer) sets ignition timing on the fly as you drive. Modern emission controlled engines have knock sensors (miniature microphones) screwed directly into the metal cylinder blocks which feed the sound pressure spikes of premature detonation (pinging) as an input to the ECM. If detonation is detected, the ECM electronically dials back ignition advance on the fly, but only just low enough to elliminate pinging - and reacts to pinging that's well below the threshold of human hearing response. The ECM sets the fuel/air ratio while you drive, too - you're literally tuning your engine continuously everytime you start it up and drive off. Do bring the matter to the attention of your dealership's service manager, though. The solution might be as simple as reprogramming the ECM if there's a TSB and downloadable software out for the pinging problem. It's also possible your car's ECM is out of operating tolerance and requires replacement. (Don't worry - courtesy of the U.S. Gubmn't, your ECM is covered for free replacement for 8 yrs or 80,000 miles under the Federal Emissions Warranty. ) And, it's also possible you just got a load or two of bad regular grade gasoline. Higher volatility winter grade gasolines that promote easier cold weather starting may contribute to some pinging tendency, too. Curiously, E10 "gasahol" has a lower tendency to ping. Go figure. Next time you're close to empty, try a half tank of intermediate grade (89 pump octane) to determine if that grade will control pinging. You'll know within a mile or two if it does. If not, fill the tank the rest of the way with 91 pump octane.
(If I'm some sort of "master", why do my three cats flip me off with an extended middle claw when I yell at 'em to stop shredding the furniture?)