Urban Buses, delivery trucks and service fleets are more commonly being fueled by CNG (Compressed Natural Gas), LNG (Liquefied Natural Gas) or LPG (Liquefied Petroleum Gas). Texas Refinery Corp’s PRO-SPEC LP/NG and MOLY XL PRO-SPEC LP/NG are two outstanding engine oils, formulated to address the disadvantages of using these gases in today’s engines. The first step in preparation for the special additive chemistry is to put the base oils through a special refining process, to remove components that would contribute to sludge, gum, varnish or other deposits.

PRO-SPEC LP/NG and MOLY XL PRO-SPEC LP/NG contain a proprietary additive (HSS) to protect engines from hydrogen sulfide normally found in lower quality LP and Natural Gas. Hydrogen sulfide can damage engine parts by corrosion, especially yellow metals such as brass, bronze, etc. By using the TRC oils with HSS, it will ensure engines are protected with all types of LP and Natural Gas.

PRO-SPEC LP/NG and MOLY XL PRO-SPEC LP/NG are considered low ash engine oils. The low ash formula helps reduce piston top-land deposits. These TRC engine oils are enriched with superior quality additives to improve performance for long drain intervals. Other oils with higher ash levels can create deposit build-up and corrosive damage, which can lead to valve, combustion chamber and turbo damage, as well as shortened engine life.

Testing of PRO-SPEC LP/NG and MOLY XL PRO-SPEC LP/NG have shown these two products significantly reduce piston deposits, even with extended drain intervals. Excellent engine cleanliness was observed, with a good Base Number (BN) retention and low wear metals. Very little viscosity increase occurred, indicating excellent performance during extended drain intervals. Both PRO-SPEC LP/NG and MOLY XL PRO-SPEC LP/NG offer impressive performance in a wide variety of engines.

The addition of MOLY XL to PRO-SPEC LP/NG reduces fluid friction (or fluid drag) by up to 65%. Fluid friction, which occurs when oil is dragged against a rough surface, is greatly reduced in engines using MOLY XL. MOLY XL smooths the friction surfaces and reduces wasted horsepower by helping to reduce metal to metal contact. Fuel economy may improve and there is often a feeling of increased horsepower when using MOLY XL PRO-SPEC LP/NG.