Like most engine design changes, anti-polish rings (APRs) were created with a particular purpose in mind to remove carbon buildup from the piston.
Continue reading Anti-Polish Rings: Do I Need Them For My Diesel Engine?Category: Blog – Diesel Engine Tech Tips
The Primary Differences Between Caterpillar 3406E, C15, and C15 Acert Diesel Engines
Picking the right diesel engine model is no easy task. If you’re considering purchasing a Caterpillar 3406E, C15, or C15 ACERT, we have the information to help you make a decision.
Continue reading The Primary Differences Between Caterpillar 3406E, C15, and C15 Acert Diesel EnginesConverting a Cummins Low-Flow Cooling System to High-Flow: What It Actually Takes
Older Cummins engines – especially Big Cam and NTC/N14-era platforms – used two different cooling system designs:
- Low-flow cooling systems
- High-flow cooling systems
These systems are not just minor variations.
👉 They are fundamentally different in how coolant moves through the engine.
And that matters when you’re trying to solve overheating – or considering a conversion.
Continue reading Converting a Cummins Low-Flow Cooling System to High-Flow: What It Actually TakesHow to Prepare Your Diesel Truck for Winter (Cold Weather Guide)
If you want to prepare your diesel truck for winter, it starts with understanding how cold temperatures affect your engine, fuel system, and overall performance.
Cold weather introduces challenges that diesel engines are particularly sensitive to, including fuel gelling, reduced battery performance, and increased wear during startup.
Preparing ahead of time helps prevent breakdowns, hard starts, and costly repairs.
Continue reading How to Prepare Your Diesel Truck for Winter (Cold Weather Guide)Highway & Heavy Parts Answers Your Diesel Engine Questions: Fuel Systems
Recently, at Highway & Heavy Parts, we’ve expanded our product offering to our customers. We now offer more fuel system components for all major OEMs.
Continue reading Highway & Heavy Parts Answers Your Diesel Engine Questions: Fuel SystemsWhy Clean Oil Matters More Than You Think (And How It Protects Your Diesel Engine)
If you’ve already invested in diesel engine parts, you already understand how critical performance and reliability are.
But there’s one system that impacts everything else, and it’s often overlooked:
Your lubrication system.
Clean oil is not just about maintenance. It directly affects how long your components last and how efficiently your engine operates.
Continue reading Why Clean Oil Matters More Than You Think (And How It Protects Your Diesel Engine)Diesel Engine Common Rail Injection Explained
We’ve talked a lot about issues you might experience with your diesel engine common rail injectors. But it’s not all about the problems! You also get a lot of benefits for having this kind of fuel injection system in your diesel engine.
Continue reading Diesel Engine Common Rail Injection ExplainedMack Engine Serial Numbers
Mack engines have long meant durability and strength just look at their bulldog mascot. They were founded in 1900, originally as the Mack Brothers Company. They are now owned by Volvo, but through their long history they’ve produced engines that remain popular with many operators.
Continue reading Mack Engine Serial NumbersYanmar Engine Serial Numbers
Originally founded in Japan in 1912, Yanmar is now a global company, spanning across Europe and America. They began by producing gasoline engines, but the company now specializes in diesel engines, with a particular focus on marine applications.
Continue reading Yanmar Engine Serial NumbersPerkins Engine Serial Numbers
Founded in the early 20th century, Perkins has long produced diesel engines for various industries. They sought to change diesel engines from a slow-moving working engine to a high-speed, high-performance workhorse. They succeeded. At first they produced engines for agricultural applications, but their engines can be found in marine equipment, industrial, construction, and more.
Continue reading Perkins Engine Serial NumbersBlack Series Lab Episode 1: Why Your Cylinder Liners Are Never Actually Round
Most diesel technicians assume a brand-new cylinder liner comes out of the box perfectly round and ready to install.
However, advanced dimensional analysis shows that even new production liners contain small amounts of geometric variation throughout the liner surface.
While these variations are often microscopic, they can still influence:
- ring sealing,
- oil control,
- blow-by behavior,
- and long-term rebuild reliability under operating conditions.
That is exactly what Highway and Heavy Parts explores in Black Series Lab– Episode 1. In this episode, we examine:
- cylinder liner roundness,
- dimensional stability,
- storage conditions,
- advanced measurement technology,
- and why standard inspection methods may not always reveal the full picture during a diesel engine rebuild.
Continue reading Black Series Lab Episode 1: Why Your Cylinder Liners Are Never Actually Round
Diesel Prices Around the World in June 2026
If you run trucks, manage repairs, or budget for diesel work, fuel price changes matter fast.
As of June 01, 2026, the global average retail diesel price was $1.56 per liter, or $5.91 per gallon, according to GlobalPetrolPrices. Their dataset notes that some countries are updated weekly and others monthly, depending on how their fuel markets are regulated.
What stands out most is not just the average. It’s the spread.
On the low end, a few heavily subsidized or regulated markets were still posting diesel prices near zero in U.S. dollar terms. On the high end, some developed markets were above $2.50 per liter, with Hong Kong above $4.50 per liter.
Continue reading Diesel Prices Around the World in June 2026
