J&M Auto Center
693 Grayson Highway St A, Lawrenceville, GA 30046 678.407.9904

Engine and Exhaust

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Fuel Saving Tip from J&M Auto Center: Gas Cap

This fuel saving tip for Lawrenceville 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...
Published on: Sep 14, 2025

Proper Grade of Gas

There are a lot of misconceptions about fuel grades – and by fuel grades I mean the octane rating. With names like “Standard," “Super," “Plus," and “Premium,” it&rs...
Published on: May 04, 2025

Diesel Engines

{{ image('MzU0') }} When someone mentions diesels around Lawrenceville, images of smoky, rattly trucks may spring to mind. The fact is that the modern, clean diesel engine is much more refined than i...
Published on: Jul 21, 2024

Simple Answers from J&M Auto Center for Lawrenceville: Fuel System Service

{{ image('MzUx') }} Question:What benefit will I get out of a fuel system cleaning?J&M Auto Center Answer:Well, the dirtier your fuel system is, the bigger the improvement you'll see in performance a...
Published on: Jul 14, 2024

J&M Auto Center Service to Improve Fuel Economy

Let’s review some things that anyone 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 way...
Published on: Jun 02, 2024

Fuel System Cleaning At J&M Auto Center In Lawrenceville

Fuel, whether gasoline or diesel, is delivered to your engine to be burned to generate the power needed to keep you moving.  This fuel leaves a residue as it moves through your fuel system. ...
Published on: Apr 30, 2023

Fuel Saving Tip: Fuel System Cleaning at J&M Auto Center in Lawrenceville

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: Jan 08, 2023

Your Nose Knows Gasoline

Each time we fuel up our vehicles, we get a little whiff of gasoline, so the smell is very familiar. There shouldn’t be any gasoline smell in or around your vehicle when you are away from the ga...
Published on: Oct 04, 2022