Modern vehicles are incredibly complex when compared to their predecessors. That being said, they still face the same enemies of the very first engines. Yes, I am talking about friction and the resulting heat it causes.

If you own a car, you know that the key to fighting these two devils is oil. It lubricates the parts of an engine which minimizes the friction. Without excessive friction, heat is kept to a minimum as well.

Oil will only perform for so long under the stressful conditions found in the engine of a modern car. This leads us to the question of how often you should change the oil in your car.

Everyone knows about changing out motor oil, right? What did you immediately think? It needs to be changed every three months? How about every 3,000 miles? If either of these came to mind, you are thinking of a marketing campaign, not the facts.

The three month marketing slogan is simply not correct. It may never have been. Cars perform differently, which means the stress placed on the engine and oil will differ. Oils have also improved dramatically and now last longer.

Why is there no one guideline? Well, consider a construction worker with a big truck who hauls tons of materials. Now consider a school teacher who drives to school and back. Which engine is going to be more stressed and need the oil changed more frequently?

Still, we need some type of guideline right? Well, you have one. For men, this will be painful. Yes, we will have to read directions. In the owners manual for the car, we can find the information for the specific needs of our vehicle.

You can expect to find a recommendation regarding the miles and time period for the oil change in the manual. There should also be a recommendation on the weight of oil and specific oil brand that should be used.

Whatever you do, stick religiously to the weight recommended for the oil by the manufacturer. The specific brand can be ignored. Castrol, Pennzoil and so on all work well enough.

If you can, try to go with synthetic oil for your car. They last much longer. A Mini Cooper, for instance, will go up to 17,000 miles between oil changes running on Castrol Synthetic. Not bad, eh?

A personal favorite of mine is Mobile 1. I’ve used this for years after a racing mechanic recommended it to me. I have to say I have experienced no engine problems since then and I drive a Jaguar! Pretty miraculous, eh?

Do not be a chump. Avoid obeying the marketing slogans of various oil change businesses. Pull out that owners manual and get the truth on oil changes for your car. You will undoubtedly save some money on less frequent changes.