Synthetic Motor Oil Great Falls MT

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Service Max
(406) 727-0380, 001-2004
4100 - 10th Avenue South
Great Falls, MT
Certifications
Blue Seal Certified
Membership Organizations
National Institute for Automotive Service Excellence (ASE)

Data Provided By:
Fast Car Wash
(406) 727-8220
615 Smelter Avenue Northeast
Great Falls, MT
Services
Car Detailing

Mm Ent
(406) 965-2280
1054 Grant Dr
Great Falls, MT
 
Meineke Car Care Center
(406) 452-3095
610 Smelter Ave Ne
Great Falls, MT
Services
Mufflers Repair

Carnahans & Sons Towing
(406) 452-8342
905 Smelter Ave Ne
Great Falls, MT
Specialty
Brakes, Electrical Service, Emission Testing, Engine Repair, Exhaust Repair, Front End Repair, General Automotive Repair, Inspection & Diagnostic, Lubrication Service, Machine Shop Service, Maintenance, Wheel Alignment
Hours
Mon:12:00 am-11:59 pm
Tue:12:00 am-11:59 pm
Wed:12:00 am-11:59 pm
Thu:12:00 am-11:59 pm
Fri:12:00 am-11:59 pm
Sat:12:00 am-11:59 pm
Sun:12:00 am-11:59 pm
Payment
Cash

Electric City Brake & Alignment
(406) 761-2852
500 8th Avenue South
Great Falls, MT
Services
Brakes Service & Repair, Auto Parts Retail, Tractor Equipment & Parts Dealers, Plumbing Service & Repair, Auto Alignment Frames & Axles Service & Repair
Hours
Mon-Fri Weekdays
Products
alignment, Commercial Industrial, Parts Available, Electric Brake Controllers,

Auto Parts and Recycling Parts
(406) 454-1917
2535 9th Avenue Northwest
Great Falls, MT
Services
Transmission Repair

Ron de Witt Repair
(406) 761-6870
1700 Vaughn Road
Great Falls, MT
Services
Transmission Repair

Whalen Tire
(406) 727-4400
1200 Central Ave W
Great Falls, MT
Services
Car Washes, Car Detailing, Tire Shops

Dewitt Machine Co.
(406) 761-6870
1209 6th St NW
Great Falls, MT
 
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Synthetic Motor Oils

William D. Siuru, Jr., PhD, PE   

Seeing the ads for synthetic motor oils, you may ask yourself, "is this something that I need for my engine?" And, "are they are worth the extra money?"

Conventional mineral motor oils are refined using crude oil for the base stock. In contrast, the base stocks for synthetic oils are man-made organic esters and other synthesized hydrocarbons. Produced from crude petroleum, minerals oils contain impurities like nitrogen, resin, asphalt, wax, carbon, sulfur and aromatic residues. Refining removes most impurities, but some still remain to cause problems especially under high stress and temperatures. Synthetic oils are developed in the laboratory to provide the exact characteristics desired. These "designer" oils include no impurities at least when poured from the can. Impurities can, of course, appear during combustion.

Synthetic oils can tolerate much higher operating temperatures, for example when towing or hill climbing in warm temperatures with the air conditioning operating. Even the best mineral-based motor oils breakdown or oxidize at temperatures of 250 degrees F to 300 degrees F. Above this, the life of these oils drops drastically resulting in increased engine wear and formation of harmful sludge, varnish and other deposits. Synthetic oils can easily tolerate temperatures up to 450 degrees F and some can go up to 700 degrees F. With synthetic oils there are no impurities to start with so they can resist oxidation up to ten times longer.

An oil's viscosity index (VI) describes how the oil's viscosity changes with temperature. The higher VI, the greater the viscosity stability and the ability of an oil to retain its viscosity by resisting shearing at high temperatures and engine speeds. Shearing reduces an oil's ability to lubricate by tearing away and thinning out an oil's film that prevents metal-to-metal contact. Synthetic oils have a much higher VI and thus viscosity stability.

Synthetic oils also work better at low temperatures because they flow much more freely right down to -40 degrees F to -50 degrees F. Wax, not found in synthetic products, that congeals at low temperatures is the culprit here. At very low temperatures, mineral oils can become so thick they will not flow at all. Naturally, this makes for much easier winter starting. Also synthetic oils start lubricating much sooner and reaches the upper valvetrain much faster. These first few moments of operation are by far the toughest wear engines see.

Synthetic motors oils are much less volatile and are thus likely to be converted from liquid to vapor. Petroleum motor oils can lose as much as 25% of their weight when the light hydrocarbons are vaporized. Synthetic motor oils remain stable at high temperatures, losing perhaps only between 5% to 10% of their weight to vaporization. This mean lower oil consumption as well as reduced exhaust emissions. Because synthetic oils are more slippery, friction is reduced. Howev...

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