RT66 Truck Repair Heavy-Duty Repairs. Built to Keep You Rolling.

RT66 Truck Repair

Heavy-Duty Repairs. Built to Keep You Rolling.

Latest Articles

Safety & Inspections

Your Truck Frame Is Rotting Quietly — And a Quick Walkaround Won't Catch It

Rust doesn't announce itself. It works in the dark, inside seams and beneath undercoating, until the damage is severe enough to compromise your entire chassis. Here's what fleet managers need to know about finding frame corrosion before it grounds your trucks — or worse.

Fleet Maintenance

Cab Mounts and Air Springs Are Costing You More Than You Think — And It's Not Just About the Ride

Most fleet managers watch the drivetrain like a hawk but completely overlook the cab suspension system — until something breaks. Worn cab mounts and failing air springs quietly drive up driver turnover, insurance claims, and component wear in ways that don't show up until the damage is already done.

Fleet Maintenance

Flickering Lights and Dead Starts: How a Neglected Electrical System Is Quietly Wrecking Your Fleet

Most fleet managers obsess over tires, brakes, and oil changes — but the electrical system quietly causes more unexpected downtime than almost anything else under the hood. From dead batteries on cold mornings to cascading ECM failures, the costs add up fast. Here's what you're probably missing and what it's actually costing you.

Fleet Maintenance

What Cheap Oil Changes Are Really Costing Your Diesel Engine — The Numbers Will Surprise You

Skipping oil changes or grabbing the cheapest quarts on the shelf feels like smart budgeting — until your engine starts telling you otherwise. The reality is that cutting corners on engine oil is one of the most expensive decisions a truck owner can make, and the damage doesn't always show up right away. Here's what's actually happening inside that engine when the oil isn't doing its job.

Fleet Maintenance

That Little Air Filter Is Quietly Killing Your Fuel Budget — Here's What It's Actually Costing You

A clogged air filter might be the most overlooked line item quietly draining your fleet's operating budget. We break down exactly how restricted airflow hammers fuel economy, accelerates engine wear, and adds up to thousands in unnecessary costs — plus a simple maintenance schedule to stop the bleeding.

Safety & Inspections

Coolant Confusion Is Costing Truck Owners Big Money — Let's Sort Out What Actually Works

With green, orange, red, and extended-life coolants all competing for space on the shelf — and wildly different opinions on flushing schedules — it's no wonder truck owners are confused about cooling system maintenance. We cut through the noise with a straight-talking breakdown of which coolant strategies actually protect heavy-duty engines and which ones are just burning money.

Fleet Maintenance

Wheel Bearing Wear Is Quietly Draining Your Fleet Budget — Here's What It's Really Costing You

Wheel bearing failure is one of the most underestimated maintenance issues in commercial trucking, and by the time most fleet managers notice the problem, the damage is already done. From missed inspection intervals to catastrophic roadside breakdowns, the financial fallout from postponed bearing repairs adds up fast. Here's a straight-talking look at what ignoring this critical component is actually costing your operation.

Safety & Inspections

Your Diesel's Fuel Injectors Are Lying to You — And Your Fuel Receipts Are Proof

If your diesel truck is burning more fuel than it used to but nothing seems obviously wrong, your fuel injectors might be the culprit. Injector degradation is a slow, sneaky process that chips away at fuel economy and engine performance long before it triggers a fault code. This article breaks down exactly how to spot the problem early, what cleaning versus replacement actually accomplishes, and how much wasted fuel adds up over a year of neglected injector maintenance.

Safety & Inspections

Suspension Neglect Is Costing Your Fleet More Than You Think — Here's the Real Number

Skipping suspension maintenance feels like saving money until you tally up the tire bills, the frame repairs, the accident liability, and the lost revenue from unexpected downtime. This is the financial case for taking suspension seriously—and it's a harder argument to ignore than you might expect.

Fleet Maintenance

When Your Diesel Runs Hot: Spotting the Warning Signs Before Your Engine Pays the Price

An overheating diesel engine isn't just an inconvenience—it's a ticking clock counting down to a very expensive failure. Learn what's actually causing your temperature gauge to climb, how to catch the problem early, and what your maintenance routine should look like to keep your trucks running cool mile after mile.

Fleet Maintenance

What Your Transmission Fluid Is Trying to Tell You (And Why Fleet Managers Can't Afford to Ignore It)

Skipping transmission fluid changes might save a few bucks today, but for fleet managers running commercial trucks, that shortcut can snowball into five-figure repair bills and days of costly downtime. We break down the real numbers, share hard lessons from fleet operators, and lay out a practical maintenance schedule to keep your rigs rolling.

Safety & Inspections

Your Brakes Are Talking — Here's How to Understand What They're Saying Before Things Go Wrong

Brake problems on a commercial truck don't usually come out of nowhere — they warn you first. The trouble is, a lot of truck owners don't know what those warnings look like until the situation has already turned dangerous or expensive. Here's a straightforward guide to the red flags that matter most, and what to do when you spot them.