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Daily Watch Notes 09232016 – Crime Prevention Tip of the Day

Good Day All,

10 Auto Thefts were reported – 9900 blk of Admiral Emerson, 2000 blk of Jensen, 7600 blk of San Pedro, 7100 blk of Vivian, 3300 blk of Monroe, 3100 blk of San Mateo, 3900 blk of Goodrich, 6200 blk of Indian School, 5200 blk of Wyoming, 3000 blk of Menaul

4 Auto Burglaries – 7200 blk of Eagle View, 2200 blk of Lester, 2800 blk of Carlisle, 6500 blk of America’s Parkway.

Points of entry included broken windows. Items taken were listed as laptops and televisions left in vehicles.

3 Residential Burglaries – 9300 blk of Academy Hills, 3200 blk of Cagua, 9100 blk of Woodland.

Points of entry were listed as open windows, broken kitchen windows and broken bedroom windows. Attempts were made at front and back doors. Offenders resorted to other points of entry. Items taken were listed as firearms, laptops, jewelry, and purses.


We are going to focus on mechanics today – We are starting to see and feel a change in the weather in the mornings. We are also starting to see vehicles being warmed up in driveways and left unattended. The reason for a warm up on newer vehicles really isn’t for the vehicle itself, but for the driver so they can go to work or school in a warm vehicle. The article below will explain why it isn’t necessary and also harmful to your engine. In other words, don’t leave your vehicle running and unattended! Criminals are on the prowl for your running vehicles.

Warming Up Your Car in the Cold Just Harms the Engine

The long-held notion that you should let your car idle in the cold is only true for carbureted engines.

Courtesy of Popular Mechanics

By Jay Bennett

Jan 22, 2016

In the thick of winter, the common wisdom is that when you are gearing up to take your truck out in the cold and snow, you should step outside, start up your engine, and let it idle to warm up. But contrary to popular belief, this does not prolong the life of your engine; in fact, it decreases it by stripping oil away from the engine’s cylinders and pistons.

In a nutshell, an internal combustion engine works by using pistons to compress a mixture of air and vaporized fuel within a cylinder. The compressed mixture is then ignited to create a combustion event—a little controlled explosion that powers the engine.

When your engine is cold, the gasoline is less likely to evaporate and create the correct ratio of air and vaporized fuel for combustion. Engines with electronic fuel injection have sensors that compensate for the cold by pumping more gasoline into the mixture. The engine continues to run rich in this way until it heats up to about 40 degrees Fahrenheit.

“That’s a problem because you’re actually putting extra fuel into the combustion chamber to make it burn and some of it can get onto the cylinder walls,” Stephen Ciatti, a mechanical engineer who specializes in combustion engines at the Argonne National Laboratory, told Business Insider. “Gasoline is an outstanding solvent and it can actually wash oil off the walls if you run it in those cold idle conditions for an extended period of time.”

The life of components like piston rings and cylinder liners can be significantly reduced by gasoline washing away the lubricating oil, not to mention the extra fuel that is used while the engine runs rich. Driving your car is the fastest way to warm the engine up to 40 degrees so it switches back to a normal fuel to air ratio. Even though warm air generated by the radiator will flow into the cabin after a few minutes, idling does surprisingly little to warm the actual engine. The best thing to do is start the car, take a minute to knock the ice off your windows, and get going.

Of course, hopping into your car and gunning it straightaway will put unnecessary strain on your engine. It takes 5 to 15 minutes for your engine to warm up, so take it nice and easy for the first part of your drive.

Warming up your car before driving is a leftover practice from a time when carbureted engines dominated the roads. Carburetors mix gasoline and air to make vaporized fuel to run an engine, but they don’t have sensors that tweak the amount of gasoline when it’s cold out. As a result, you have to let older cars warm up before driving or they will stall out. But it’s been about 30 years since carbureted engines were common in cars.

So unless you’re rolling in a 1970s Chevelle—which we assume isn’t your daily driver—bundle up, get into that cold car, and get it moving.