Preferred Automotive
12356 Wilkins Ave, Rockville, MD 20852 301.881.8530

Engine and Exhaust

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Minimizing Blind Spots In Rockville For Safer Driving

When we Rockville travel around Maryland, each of us must deal with blind spots. We can greatly reduce our blind spots by properly adjusting our vehicle mirrors to give the widest coverage possible. W...
Published on: Nov 14, 2022

Preferred Automotive Tech Question On Your Fuel Pump

{{ image('MzM1') }} Preferred Automotive Tech Question:I was driving on a local Rockville road and my vehicle started sputtering. And then the engine finally quit and I couldn't get it started. I was...
Published on: Jul 04, 2021

Gasoline Direct Injection

{{ image('MzU0') }} Question:My new car has a “GDI” engine. What does that mean to me and other Rockville vehicles with this new type of engine?Preferred Automotive Answer:GDI stands for ...
Published on: Mar 17, 2021

Fuel Saving Tip from Preferred Automotive: Gas Cap

This fuel saving tip for Rockville residents is so simple you won't believe it. It has to do with your gas cap. The first thing is to make sure it's screwed on tight. If it's loose, gas vapor will be ...
Published on: Feb 08, 2021

Preferred Automotive Service to Improve Fuel Economy

Let’s review some things that Rockville drivers can do to improve fuel economy. Bottom line,  the better you maintain your vehicle, the less fuel you will use. It all adds up in a big ...
Published on: Jan 13, 2021

Fuel System Service at Preferred Automotive

Today's 
Preferred Automotive post contains a quick overview of the fuel system. It starts with the fuel tank. The fuel pump is located inside the tank and pumps fuel out to the engine. Somewhere alon...
Published on: Oct 04, 2020

Fuel Saving Tip: Fuel System Cleaning at Preferred Automotive in Rockville

A lot of gas is wasted in dirty fuel delivery systems.  Let’s start at the tank.  The gas tank gathers of dirt, rust and sediment over the years.  That’s why there’s a...
Published on: Apr 21, 2020

Time To Take Another Look at Diesels

{{ image('MzU1') }} If you haven't looked into diesel engines lately, you may be interested in today's post. Why should you care about modern diesel engines? Fuel efficiency, for starters. Because di...
Published on: Apr 22, 2019