The Werk Shop - Professional BMW Restoration, BMW Preservation and BMW Service by Mike Marijanovic and Don Dethlefsen's shop in Lake Bluff - just north of Chicago, Illinois.  Serving the BMW enthusiast.
The Werk Shop - BMW Restoration and Automotive Service in Lake Bluff, Illinois
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Tech Tips
$ave on Gas
With gasoline prices climbing, here are a few tips to help you save money as you travel.

Drive Efficiently and Sensibly
Use cruise control and avoid aggressive driving (speeding, rapid acceleration and braking) to reduce your fuel consumption. Slow down. Gas mileage decreases rapidly when you travel faster than 60 mph. Each additional 5 mph over 60 mph costs you approximately 15 cents more per mile. Avoid excessive idling whenever possible. It wastes more fuel than restarting your engine. Also, limit extra items in your vehicle.

An extra 100 pounds in your car costs you 2% in miles per gallon, especially in smaller or lighter vehicles.

Keep Your Car in Shape
Maintain your vehicle with recommended tune-ups, oil & filter changes, and tire inflation. It could save you up to 40% at the gas pump.

Plan and Combine Trips
Commute with others whenever possible. Try to travel during off-peak hours to avoid slow traffic. Grouping errands are another good way to save.


Engine Oil
We recommend using “top shelf” synthetic motor oil such as Castrol Syntec. Oils such as this one are “slipperier” than standard petroleum oil, so they greatly reduce the amount of wear on internal engine parts, as well as provide better fuel economy and higher power output. We recommend a change interval of 5,000 to 7,500 miles. At this point, the oil is typically still in usable condition, molecularly. However, foreign particles & contaminants from the engine’s combustion process will have built up to a point that they should be flushed from the engine. A good rule of thumb is to change the oil when it changes from translucent to opaque. As the oil ages, it will get darker yet still be translucent. It’s when you can no longer see through the oil, that an oil change is needed. Keep in mind; this interval is valid for only premium synthetic oils; a petroleum-based oil should be changed every 3,000 miles or every 3 months, which ever comes first.


Air Filters

Replacement of standard paper air filters should be done once a year; more often if the vehicle is in dusty conditions. A dirty air filter will impede airflow to the engine, increasing gas consumption and reducing performance. A dirty filter will eventually allow contaminants to pass through into the engine, greatly increasing engine wear and the likelihood of future unscheduled maintenance. You should also remember to change your cabin air microfilters at the same time. While these filters do not affect your performance, they affect your health and the scent inside your car.


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