VIDEO: Hydrodynamic Lubrication In Engines
Andrew Markel discusses how an oil filter can change the lubrication in the crankshaft or camshaft bearing surfaces. Sponsored by MAHLE.
VIDEO: The Role Of Dispersants In Engine Oil
Andrew Markel discusses the formation of carbon during the combustion process, and how the proper engine oil can prevent sludging in the engine. Sponsored by MAHLE.
VIDEO: Three Tips For Engine Replacement
Andrew Markel discusses engine replacement after a failure, and three important components to focus on with the remanufactured engine. Sponsored by Nissan.
Nissan Variable Compression Engine
The new Nissan 2.0 L VC-Turbo (Variable Compression Turbo) offers similar performance figures to the 24-year-old 3.5 L V6 that it replaces, while providing 4-cylinder fuel economy. The first vehicle to receive the engine in the Nissan lineup will be the 2019 Altima SR. While it might be a few years before this engine is in your bays, the preparation and training needs to start now, not when you are stumped with a problem.
SKYACTIV Technology: Ultra High-Compression, Direct Injection Engines Are Making Fuel-Economy Waves
The secret to Mazda’s fuel economy gains with its SKYACTIV-G engines is in its approach to combustion management. Diesel engines are typically about 30 percent more efficient than gasoline engines partly because of their significantly higher compression ratios (16:1 or higher for diesels versus 9:1 or 10:1 for most gasoline engines). Raising the compression ratio of a gasoline engine also improves its thermal efficiency, power output and fuel economy.
VIDEO: Oil Specifications In The Age Of Stop-Start Systems
Andrew Markel discusses the growing margin of vehicles with stop-start economy systems, and what that means for the changing state of oil. Sponsored by Auto Value and Bumper to Bumper.
VIDEO: Oil Life Monitors On GM Vehicles
Andrew Markel explores GM’s specifications for oil life monitors and how they may alert the driver to change the oil at an unexpected time. Sponsored by MAHLE.
The Oil And Carbon Deposit Connection
Oil is made of carbon atoms. The oil in the crankcase is a highly refined carbon-based substance that is found in long chains with strong bonds that are typically uniform in size and shape. They work well together to lubricate the engine and protect the bearings, as they are engineered to withstand extreme temperatures.
Demystifying Scopes: Engine Camshaft And Crankshaft Waveforms
Having to remove valve or front cover of an engine to check engine timing marks can rarely be completed in under an hour on most modern engines. But, capturing the waveforms from the camshaft and crankshaft sensors can be completed in under 30 minutes. This diagnostic approach can also diagnose circuit and sensor problems.
VIDEO: Thermostats And Oil Sludging
Andrew Markel explains how improper temperature control in the engine can lead to oil sludging in the valvetrain. Sponsored by MAHLE.
Timing Chain Stretch: It Could Be Neglected Oil Changes And The Wrong Oil
Timing chain stretch is not the stretching of the timing chain, it is an elongation of the timing chain caused by wear to the chain’s components. The most common cause of timing chain stretch is lack of maintenance and regular oil changes.
VIDEO: Diagnosing Intake Manifold Gasket Leaks
Andrew Markel discusses the intake manifold, and how to spot leaks in the gasket despite the location of the manifold in modern vehicles. Sponsored by Auto Value and Bumper to Bumper.
