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Duke and Cayenne’s Automotive Corner

"Welcome to Duke and Cayenne’s Automotive Education Blog. Each week, Duke and Cayenne open their book of knowledge to bark with you. Check back often to see how they can teach an old dog new tricks. Never stop learning!"

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Cayennes' Drives Easy Miles-How About You?

cay

 

Aaahhh Summer and driving easy on a beautiful day, Cayenne here and today we are driving easy  but are you?????

Have you ever noticed that your car maker has a schedule in your owner’s manual for what is called “severe service” maintenance? Let’s define what severe driving conditions aren’t: The easiest driving a vehicle experiences is traveling on the interstate for twenty miles or more at a constant rate of 65 miles per hour in 75°F weather with only passengers on board. Change any one of those parameters and you are adding stress to your engine. Change them significantly, and you are driving under severe conditions.

Let’s look at the essential parameters one a time. First, the length of the trip. Short trips around Los Altos are harder on an engine than longer ones. As your engine cools down, water in the air condenses onto the engine. When you heat the engine again, the water evaporates off. This is healthy. But on short trips, the engine doesn’t stay hot enough long enough for all of the water to evaporate so it starts to build up in the engine oil leading to sludge, which can clog up your engine and lead to serious engine damage. If most or all of your trips around Los Altos are less than four miles, you should reflect on using the severe service maintenance schedule. Changing your oil more frequently at Allied Auto Works in Los Altos will help prevent the formation of sludge.

Each sedan engine has a “power band,” or the range of RPM’s in which it runs most efficiently. Generally this power band falls in the range of CA highway speed driving. So if you’re driving around town in Los Altos all the time, your engine has to work harder. That’s why gas mileage ratings are so much better on the freeway than in the city. Again, this type of driving is considered severe and requires more frequent maintenance for your transmission, cooling system and brake fluid.

Most of us Los Altos auto owners think of severe CA weather conditions when we think of severe driving conditions. And we’re right. Cold Los Altos area weather takes its toll on the oil in your vehicle. Remember how water has to evaporate out of the oil to keep your engine healthy? It can take up to ten miles of driving for an engine to get hot enough to get rid of moisture in the oil when the weather is cold.

Hot Los Altos weather is also dangerous for sedans. When an engine runs, it gets hot. The longer it runs, the hotter it gets. If it gets too hot, it breaks down. So it has to be constantly cooled to keep running. Hot CA weather means your cooling system has to work harder to keep your engine from getting too hot.

Another critical element of severe driving is the conditions we drive through. Dusty, polluted Los Altos areas are dangerous to your filters. Dirt, dust and contaminants will also get into your fluids, and they’ll get dirty faster, so they’ll need to be changed more often as well. Finally, when you’re pulling a trailer around Los Altos, carrying heavy loads or using a car-top carrier, you are putting more stress on your engine. The engine, transmission and brakes are all working harder to handle the extra load.

So, in the end, most of us Los Altos auto owners drive under severe conditions some of the time. Smart Los Altos car owners will ask themselves the question: "Should I follow the severe service maintenance schedule?" An honest evaluation of our driving habits is the best way to determine which schedule to follow.

Here's to long hot summer days,

Cayenne

 

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