Oil Archives - Page 8 of 8 - UnderhoodService
A/C Compressor Oils: Types, Uses And Differences

A/C compressor oil types can vary due to the compressor manufacturer, refridgerant and OEM requirements. See which oils to use for modern A/C systems.

Diesel Oil PC-11 Will Soon Be Changing

PC-11 will now define two separate heavy-duty diesel lube oils. PC-11A is scheduled to be commercialized in March 2017. This oil performance category will address pre-2017 engine designs and all the various XW-40 and XW-30 grade oils on the market since much is known about their actual field performance.

diesel oils pc11
Why Oil Filters Matter To Extended Oil Change Intervals

With oil life indicators pushing the average oil change past the 6,000-mile mark, it is not just the quality of the oil that’s improved, it is the quality of the filter, as well. Neglected oil change intervals can ruin the best engine oils and filters. As engine oil and the filter accumulate miles, they become contaminated with carbon, water and various acids, all of which are a byproduct of internal combustion that will form a film of black, gooey sludge on the interior parts of the engine.

Replacement of the oil filter. New and old dirty filter
Non-Invasive Methods To Remove Gaskets And Clean Surfaces

When removing old gaskets, there are two things to avoid. First, you want to avoid any of the material from entering the engine. Second, you do not want to damage the sealing surfaces. On modern engines with aluminum castings, a metal scrapper can do a lot of damage.

Scored gasket journals
Oil Monitors: Talking To Customers About Life And Reality

With today’s vehicles, different makes and models have stark differences in component design and engineering. Likewise, the driving style between any two drivers on the road can be just as varied as the vehicles they own. So, the question then in the face of these variables is, “Why are most oil change guidelines still so uniform and generic?”

Oil-Related Engine Codes for VVT Engines

Variable valve timing is becoming a standard system on most late-model engines because it offers higher performance from a smaller displacement engine at higher rpms. Oil plays a larger role in VVT systems. They need engine oil not only for lubrication, but also to actuate the camshafts to change the profile of the lobes. Oil

VVT camshaft adjustment
A/C Oil Service: Avoid Compressor Failure With Proper Maintenance

HVAC systems often fail because the air conditioning compressor fails. Not following the proper service procedures or compressor oil recommendations could be factors that contribute to premature compressor failure. Refrigerant Since the mid-‘90s, all vehicles have been using R-134a refrigerant, but soon, vehicles will arrive at your shop equipped with R-1234yf refrigerant. This is the

AC Oil Compressor failure
Variable Displacement: The Future of the Oil Pump is Here

Almost every major OEM has an engine or engine family that uses a variable displacement oil pump that is controlled by the ECM to deliver the best possible pressure and efficiency. When it comes to improving fuel efficiency, 3% to 5% are huge numbers. Achieving those fuel efficiency numbers while also increasing the power to

Variable Displacement Oil Pumps