Weldon Spring Auto
818 O'Fallon Road, Saint Charles, MO 63304 636.498.6600

Engine and Exhaust

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Motor Oil—The Synthetic Advantage (Synthetic oil vs Conventional)

You’ve probably already heard that regular oil changes are extremely important for the health of your vehicle’s engine. That’s sound advice.  But what you might not know is when...
Published on: Feb 23, 2025

The “Man-Made” Engine Oil (Synthetic Oil Change)

If you own a newer vehicle, your vehicle’s manufacturer may require that it use synthetic oil instead of conventional oil.  Synthetic oils are more stable, don’t break down as easily,...
Published on: Dec 01, 2024

The Harm in Skipping an Oil Change

Some new vehicle manufacturers are now recommending much higher oil change intervals than they have in the past. As much as 5,000 to 8,000 miles or more.  Following these recommendations is very ...
Published on: Feb 03, 2023

Simple Answers from Weldon Spring Auto: Synthetic Oil

Question What is synthetic oil, and should I use it? Answer Regular oil, also called conventional oil, comes from dead dinosaurs.  Conventional oil molecules are long hydrocarbon chains of var...
Published on: Dec 25, 2022

Change Your Oil, MO Drivers!

As engine technology advances, recommended oil change intervals have gotten longer.  High quality oil in a well-engineered engine has led to extended intervals.  Here’s the problem:&n...
Published on: Sep 19, 2022

Oil Change

An oil change:  Sounds simple, but there’s some important things to know about preventing oil sludge. Oil eventually starts to turn into jelly.  Literally – petroleum jelly.&nbs...
Published on: Aug 11, 2019

Weldon Spring Auto Advice on Synthetic Oil

Heard of synthetic motor oil but would like to learn more information?  Well, synthetic motor oil is a substitute for conventional oil.  Synthetic doesn’t gel or gum-up like conventio...
Published on: Jul 14, 2019

Oil Change

An oil change at your local St. Charles, MO, auto shop sounds simple, but there are some pretty important things to know about preventing oil sludge.Oil eventually starts to turn into jelly, literally...
Published on: May 02, 2019