Los Altos Auto Repair

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Allied Auto Works(650) 968-7227
Duke and Cayenne | Allied Auto Works Grant Road

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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Duke's Severe Service Requirements

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Duke here and can you believe it; March has finally arrived and restrictions are lifting during this challenging time which also means you will be driving more.  A lot of my dog friends have asked me if their owners should be using their severe service maintenance schedule, which is in the owner's vehicle manual. It can be somewhat confusing, so I decided to consult an expert, Cricket Killingsworth.......so let's get barkin' with her today!

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, Los Altos automotive repair centers (including Allied Auto Works) subscribe to information services that provide the auto maintenance schedules for every vehicle - so they can help Los Altos drivers know when to take care of needed services. Below is a typical definition of 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 CA weather
  • The engine is at low speed most of the time (not on the freeway)
  • Stop and go driving
  • You drive in dusty or muddy conditions
  • You routinely tow a trailer, haul heavy loads or carry a car-top carrier around Los Altos

It's common sense for Los Altos 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 Los Altos 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 Allied Auto Works 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 CA highway driving in moderate weather, you'll likely have a fairly good amount of severe service mixed in. Some Los Altos 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 and tell them Duke sent ya,

Duke

duke

Allied Auto Works
2073 Grant Road
Los Altos, CA 94024
650.968.7227
https://www.alliedautoworks.com/

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Maintenance
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