Lubes - FAQ
Mulgrew Oil and Propane never skimps on quality. We only carry name brand, high quality products. Our core brands are Shell, Sinclair, FUCHS, Castrol and DA. We also have access to Pennzoil, Quaker State, Phillips and Mobil products.
Viscosity is a measurement of thickness & resistance to flow.
For a multi-viscosity oil (5w20), the first number is the viscosity in cold weather, the “W” stands for winter and the last number is the oils viscosity at 100 degrees C.
Both oils were tested and will perform the same at 100 degrees C. The SAE 30 was not tested at the lower temperatures so it will probably not have the same characteristics at the lower temperatures. The 5w30 will perform like an SAE 5 at the colder temperatures. A multi-viscosity oil will give you protection at lower and higher temperatures.
To meet goals for more fuel-efficient engines and fewer emissions, many next-generation engines will run at higher operating temperatures. This will require changes in engine oil composition, so they can withstand more heat without sacrificing engine protection.
It will also mean that instead of just one category of engine oils, we’ll have two – CK-4 and FA-4. CK-4 engine oils will be a direct replacement for the engine oils you’re using now. You’ll be able to buy the same viscosity grades and oil types (conventional, full synthetic, synthetic blend) you’re using now, and they’ll be “backwards compatible” to ALL current vehicles. They’ll just also conform to the new PC-11 standards.
The new FA-4 engine oils will be offered in lower viscosity grades and are designed primarily for next-generation engines to help maximize fuel economy without sacrificing engine protection. These FA-4 oils may have limited backwards compatibility and would be labeled as such. Oil companies and OEMs are currently testing these products in a range of applications to demonstrate without sacrificing engine protection.
Both synthetic and conventional oils start out as crude oil, but that’s where the similarities end -- Synthetic oils are not only refined but also distilled, purified and broken down into its basic molecules. This process not only removes more impurities from the basic crude but also enables individual molecules in the oil to be customized to provide higher levels of protection and performance than conventional oils.
Conventional oils have molecular structures that are randomly organized and consequently have limited performance abilities. Their varied and inconsistent molecular structure result in less film strength and lubricity. Their paraffin wax content also makes them more susceptible to viscosity variance and cold-temperature flow problems.
DEF is diesel exhaust fluid. It is a non-hazardous solution, which is 32.5% urea and 67.5% de-ionized water. DEF is sprayed into the exhaust stream of diesel vehicles to break down dangerous NOx emissions into harmless nitrogen and water.
No, DEF is classified as a non-hazardous material. It is, however, corrosive to most metals. Stainless steel is the only metal used in manufacturing DEF equipment.
Diesel Exhaust Fluid is affected by both extreme warm and cool temperatures. Product stored for prolonged periods at temperatures above 86°F can begin to lose urea potency. If this occurs, the SCR system will simply dose DEF at a higher rate than the normal 2-4% to compensate for its decreased potency level. In extreme cool temperature, DEF will begin to crystallize at 12°F.
Mulgrew Oil Company supplies a unique product mix of competitively priced, high quality additives, cleaners and functional fluids to meet the needs of professional mechanics and retail consumers.