May 042012

Car and engine manufacturers give recommended oil change intervals of around or between 2,000 to 7500 miles (corresponding to 3,200 to 12,000 km) between oil changes depending upon operating conditions. There are so many variables such as engine load, short trips, speed, prolonged idling and dust that an exact recommendation that fits all vehicles, their climates and environments and driving patterns is virtually impossible.

First, let’s establish why it is important to do so. Contaminants, do, accumulate in the oil. Oil is also prone to certain chemical changes like oxidation and additive depletion. These two reasons alone, prevent it from doing its job of lubrication and an as a coolant.

The longer you drive a car, the more contaminants it accumulates. The increase of these depend on several factors like the mechanical condition of the engine, the owner’s driving habits, air cleaner service, and carburetion adjustments. Oil filters must be replaced regularly in order to slow down the deterioration process. To further clarify, oil doesn’t wear out but the additives responsible for making it function are the ones that get depleted. New oil and filters will make the engine last longer and maintain the car’s good performance. auto maintenance. Shinder says so to speak – with years and years getting taxis back on Winnipeg streets and roads. Still it depends whom you ask as to how often to change engine oil and filters. Your local garage mechanic will tell you one thing, your car or truck’s owner’s manual another – and your local new car dealership – whom wants to get you into a new vehicle via more frequent visits to their auto service center another so to speak. In the end trust your new car maker’s owner’s manual in your glovebox as your best source of accurate information for your specific vehicle as to the frequency and timing of oil changes.

The American Petroleum Institute says that this change should be done at “regular intervals” and check with the recommendations given in your car’s service manual. Usually, there are two types: one for mileage which, in most cars is as around 3,000 miles; and the other one is for time, at around three months. When it’s summer time decrease the recommendation by 10% and by winter 20%. For example, in winter the oil must be changed around 2,400 miles. This is the computation for maximum oil-change intervals. It might be a bit costly and inconvenient for some, but you are assured that the car is in good condition when you need it to be. These suggestions should only be used a basis for when you should change the oil. Take it with a grain of salt. If you have an upcoming cross-country trip where you expect to travel around 7,000 miles, it is not practical to have your oil change every 2,700 miles in the summer. Granting that ideal conditions are present like well-paved roads, high speed driving and clean highways, then you can make an exemption. If luck isn’t on your side and an encounter with a bad dust storm occurs, good reason will tell you that an oil-drain must be done earlier than usual.

In that most auto engines are not operated under either extreme or ideal conditions, it is important to know the general conditions surrounding the use of the specific engine and in which specific vehicle that is question. In this manner , a reasonably accurate determination of the oil change interval can be made , stated and a recommendation made. However it should be emphasized that at no time should the manufacturer’s recommended maximum interval be extended or inflated. Lastly motorists with diesel engines – diesel powered trucks and diesel fueled cars be reminded that oil change intervals are shorter than with similar gasoline fueled cars and trucks. V:12

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