A lot of St. Peter drivers have asked whether or not they should use their severe service maintenance schedule, which is listed in their vehicle’s  owner’s  manual. It can be somewhat confusing, so we decided to consult an expert. Cricket Killingsworth is from QMI/Heartland, a manufacturer of automotive products and fluids. She’s been in the automotive business for over 30 years and is a speaker, a trainer and a writer.

Cricket says there’s so much confusion on this topic because, “Most owner’s manuals actually have two maintenance schedules. Sometimes these are called ‘regular service’ and ‘severe service.’ Sometimes they’re simply called Schedule 1 and Schedule 2. A severe service schedule recommends that things like an oil change, air filter replacement and transmission service be done more often: either in fewer miles or in less time.”

Foreign and domestic vehicle manufacturers create a specific schedule for each vehicle they manufacture. So there isn’t one generic schedule that applies to all vehicles. In addition to your owner’s manual, St. Peter automotive repair centers (including Autotronics of St. Peter) subscribe to information services that provide the auto maintenance schedules for every vehicle – so they can help St. Peter drivers know when to take care of needed services. Below is a typical definition for severe service.

• Most trips are less than four miles/six and a half kilometers
• Most trips are less than 10 miles/16 km and outside temperatures are below freezing
• You drive regularly in very hot MN weather
• The engine is at low speed most of the time (not on the freeway)
• Stop and go driving
• You drive in in dusty or muddy conditions
• You routinely tow a trailer, haul heavy loads or carry a car-top carrier around St. Peter

It’s common sense for St. Peter drivers: Just a few minutes at higher speeds allows the moisture in the oil to evaporate. Very short trips, or trips of less than 10 miles when it’s very cold, don’t allow the engine to heat up enough to get rid of the water. And water in the oil leads to damaging sludge. Also, towing and heavy loads raise operating temperatures and cause fluids to break down faster. Dusty and muddy driving around St. Peter means that more dirt will get past the air filter to contaminate the fuel system and engine oil.

The bottom line is that you need to decide for yourself if the regular or severe service schedule is right for you, based on your driving habits. Look at your owner’s manual or talk with your Autotronics of St. Peter service advisor who can help you know which schedule to follow.

Here is what a fleet manager said recently: “Since city miles are generally tougher on vehicles than highway miles, we use the manufacturer’s severe service schedule as the basis for our preventative maintenance program. We massage those schedules over time, increasing or decreasing the service intervals so that they make the most sense. There is a little bit of art to go along with the science.”

Make an honest evaluation of your driving habits. Unless you do mostly MN highway driving in moderate weather, you’ll likely have a fairly good amount of severe service mixed in. Some St. Peter drivers just want to play it safe and follow the severe service recommendations, rather than analyzing how they drive each month.

Ask us for help evaluating your driving and service needs.

Autotronics of St. Peter
111 Jefferson Avenue
St. Peter, MN 56082
507.934.9290
http://autotronicsstpeter.com

Many St. Peter car owners have probably wondered: “What’s the harm in putting off replacing an engine air filter? The answer is that not replacing it could cause your Mass Air Flow (MAF) sensor to fail. This expensive sensor is situated between your engine air filter and your engine. Dirty air filters are a leading cause of mass air flow sensor failure – and these babies can cost several hundred dollars to replace in St. Peter.

Change your vehicle air filter at Autotronics of St. Peter when it’s dirty. Your vehicle engine will thank you.

Give us a call.

Autotronics of St. Peter
111 Jefferson Avenue
St. Peter, MN 56082
507.934.9290
http://autotronicsstpeter.com

If you’ve ever heard a squealing sound under your vehicle hood, chances are it was your serpentine belt. More importantly, the belt powers the alternator. The alternator creates electricity that’s used by your vehicle’s electrical systems and also charges the battery. Without the alternator, the battery will go dead after a short distance.

The serpentine belt may also run the pumps for both the power steering (some are electric) and power brakes (some use vacuum boost).

And, on most vehicles, the serpentine belt powers the water pump. The water pump circulates coolant through the engine to keep it within optimal operating temperatures. On some St. Peter vehicles, the water pump is powered by the timing belt instead of the serpentine belt.

When they understand what it does, St. Peter drivers realize that if it breaks, it affects a lot of systems. That’s why vehicle manufacturers outline recommended replacement guidelines in the owner’s manuals. If this important maintenance component is not included in your owner’s manual, come see us at Autotronics of St. Peter.

At Autotronics of St. Peter in St. Peter, your professional technician can perform a visual inspection of the belt to see if it has any cracks that signal the belt could fail soon. If the belt has more than three or four cracks every inch or couple of centimeters, has deep cracks that penetrate half the depth of the belt, is frayed, is missing pieces or has a shiny, glazed look, it needs to be replaced regardless of age or mileage.

If it has lost a significant amount of thickness, it also needs to be replaced. Talk to your service advisor at Autotronics of St. Peter. There’s a special spring-loaded pulley attached to the engine called the tensioner pulley. Its job is to make sure there’s a constant tension on the serpentine belt so that it doesn’t slip. The spring can become worn and no longer provide the necessary pressure to keep the belt tight. At Autotronics of St. Peter, we recommend that the tensioner be replaced at the same time as the serpentine belt.

As mentioned, a squealing sound could alert you that the serpentine belt needs to be replaced. It may be loose if you hear a slow, slapping sound when idling your vehicle.

All in all, the serpentine belt is very important to the operation of your vehicle. And it’s not that expensive to replace at Autotronics of St. Peter – so it’s good to do so before it fails.

Autotronics of St. Peter
111 Jefferson Avenue
St. Peter, MN 56082
507.934.9290
http://autotronicsstpeter.com