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Sedans Mercedes-Benz C-Class Mercedes-Benz C-300 2008
267 messages, Last post on Dec 04, 2009 at 12:40 AM
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Hi, I am in Texas and I recently bought a C300 sports. The dealership told me that breaking in is not necessary for this car but I was wondering if anyone had advice. I have driven 600 miles already and it's always tempting to accelerate whenever I am at a stop. Please share if someone has any knowledge. Thanks!
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Replying to: tommy8501 (May 25, 2008 6:22 pm) -Avoid full throttle -Try to keep the rpm below 4-5000 -Vary rpm at highway speeds [try to avoid steady speeds at the same engine rpm for extended periods] It's really hard to abuse these engines - a little common sense is all that's necessary. After 1000 miles or so, feel free to let it rip.... |
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Replying to: tommy8501 (May 25, 2008 6:22 pm) |
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Since we bought the car in December, we've been putting regular and car runs very well. We had 2000 E-320 before and we never used anything else but regular gas. Long time ago the guys from Car Talk (Saturday PBS station) stated that there were no real benefits of using premium .... even if was recommended. We didn't experience any long-term negatives in the past 8 years using regular gas. Any similar experiences? ..... Cost of gas is not the issue. Acura models recommend premium but regular is OK for Honda.
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Replying to: be325 (Jun 16, 2008 8:15 am) I have been wondering if I can do this but not brave enough to try. I have had other cars also recommend high test and have used reg. gas and had no problems. I have the 300 C 4matic since Jan, so far a great car. |
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Mercedes requires you to use premium in their gasoline cars. They will run on regular because the computer dials back the timing, and the result is slightly less power, slightly MORE fuel used, and the risk of more carbon buildup from inferior detergent content. If you really think this is worth 20-25 cents a gallon, do it. I'm left to wonder, however, why you aren't just driving a car that uses regular and costs less to buy and own in the first place. At the pump prices in our area, the difference between regular and premium is about 5%; since your fuel mileage will be reduced by about 2-3%, you're left with 2-3% savings....utterly pointless.
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Replying to: jrct9454 (Jun 17, 2008 5:36 am) I lease my cars...and I am not worried about carbon buildup in that short time. I have never actually found a difference in gas mileage between using regular and premium fuel...and I have run four tankfuls of both to compare the results. Since I have never floored the gas on any car, if there is a slight decrease to the pep, I don't see it. If I owned the car or noticed a difference (knock/ping) I would burn premium....or at least I would burn premium every few tankfuls...I'd probably burn the medium grade fuel normally.
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Replying to: ghstudio (Jun 17, 2008 5:53 am)
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Replying to: be325 (Jun 17, 2008 7:59 am)
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Replying to: jrct9454 (Jun 17, 2008 12:40 pm) If you are buying a used car, you have absolutely no idea who drove it. It could have been me...or it could have been that guy who took the brand new car and floored it at every light and screeched to a halt at the next light completely ignoring all break in recommendations. How about those used cars from the car rental places where they don't do any real maintenance, they are driven thru pothole after pothole, and have never ever seen premium gas. Believe me...you really do want my car. I break it in correctly, I put on gentle wear and yes, I burned regular gas...but if you want to run premium, the computer will adjust almost immediately. |
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