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When is It Hot Enough for a Synthetic Oil?

When is It Hot Enough for a Synthetic Oil?

Synthetic Oil

Synthetic Oil

“My supplier is pushing hard to move his synthetic gear oils into my operation. His position is that the units run too hot for long-term use of mineral oils. At what temperature should I switch to a Synthetic Oil lubricant for a non-circulated gearbox?”

First, the term synthetic is very broad, so we assume you are referring to lubricants that are formulated using polyalphaolefin (PAO) synthetic oil base.

Synthetic Oil

There is no single temperature point that dictates a time to move to synthetics. The decision is dependent on equipment continuous loads and shock loads, equipment availability for routine maintenance, criticality of the application, component life cycles, lubricant life cycles and failure modes among other things.

Generally, the rate of lubricant degradation doubles with every 18 degrees F increase in temperature. Once formulated with antioxidant additives, PAO-based lubricants have a lower baseline rate of oxidative degradation. At low temperatures, a PAO’s increased oxidative life may not be noticeable, particularly if you have to change the oil at some point for other reasons. At higher temperatures, the synthetic may last noticeably longer.

Typically, you begin to notice the extra life provided by a PAO synthetic oil above 160 degrees F. If it is above 180 degrees F, and especially 200 degrees F, the difference in oxidative life becomes quite apparent. However, the point at which a change to synthetic is justified is dependent perhaps on a handful of additional “program management” parameters such as:

1. Do you intend to run your gear oils with an appropriate use of filtration and oil analysis to support life-cycle extensions for many years?

2. Are you currently doing oil analysis and performing condition-based changes?

3. Do you have, and have you communicated to your lab, oxidation limits that flag impending oxidation problems?

4. Does the machine’s operating temperature vary a great deal (a PAO’s high viscosity index enables it to operate across a wider temperature range)?

5. Do you have an effective contamination control program in place that will enable you to fully exploit the PAO’s extended life?

With the appropriate management strategy, a change to a high-performance product can actually cost considerably less than the equivalent mineral oil product type. Outside of these considerations, somewhere around 165 degrees F represents the point at which you probably should begin to consider the use of synthetics for the sake of lubricant longevity, if not for the sake of reliability.

Synthetic Oil

Synthetic Gear Oil

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Posted on January 11, 2012 by , Reply

Does Your Differential Feel Neglected? Synthetic Gear Oil

Does Your Differential Feel Neglected? Change to synthetic gear oil

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Many truck and SUV owners personalize their vehicles with aftermarket products such as lift kits, tires and rims, custom grills, paint, wheel well flairs and engine upgrades. While these upgrades and accessories can increase engine performance and add plenty of visual appeal, they do nothing for extending drivetrain life like synthetic gear oil can do.  Most people perform proper engine maintenance and change their engine oil on a regular basis, but according to one quick lube business, only about two percent of its customers purchase differential gear lube changes. Even fewer change to synthetic gear oil. Sometimes this out of sight, out of mind differential neglect results in costly gear failure, leaving the motorist stranded on the highway.

synthetic gear oil

differential drain plug

There are two basic ways to change differential gear lube to synthetic gear oil. The old fluid may be drained or suctioned out and the differential refilled with new gear lube, or the differential cover may be removed to allow more of the old gear lube to drain out and allow access to the magnet inside the differential. Unlike engines, differentials are not equipped with filters. Instead, magnets that are open to the entire gear lube sump are used to catch some of the metal wear particles. When changing differential fluid, the magnet should be cleaned to ensure the new gear lube does not
become contaminated.

After draining the old fluid and cleaning the magnet, the differential cover should be re-installed and the differential filled with the correct viscosity grade of AMSOIL SEVERE GEAR® Synthetic Gear Lube. The use of cleaning solvents is not recommended. Initial differential oil changes are recommended by some manufacturers after the first 500 to
3,000 miles. synthetic gear oil

synthetic gear oil

Even when vehicle manufacturers do not specify to change the factory-fill gear lube to remove wear particles, it is a
good practice to do so. For optimum gear and bearing life, AMSOIL recommends the factory-fill differential gear lube
be changed no later than the first 5,000 miles with new or rebuilt gears, followed by 50,000 mile drain intervals in
severe service or 100,000 mile drain intervals in normal service when using AMSOIL synthetic gear lubes.

synthetic gear oil

synthetic gear oil

synthetic gear oil

AMSOIL recommends any one of three SEVERE GEAR viscosity grades, 75W-90, 75W-110 or 75W-140, for turbo diesel or 4×4 trucks, SUV’s and automobiles.

SEVERE GEAR 75W-90 (SVG) replaces competitive 75W-90 and
80W-90 gear lubricants and delivers the optimum fuel efficiency and cold temperature performance of all the SEVERE GEAR gear lubes.

SEVERE GEAR 75W-110 (SVT) replaces competitive 75W-110, 75W-90 and 80W-90 gear lubricants and delivers increased fluid film wear protection over lighter viscosity fluids and better fuel efficiency than 75W-140 gear lubes.

SEVERE GEAR 75W-140 (SVO) replaces competitive 75W-140, 80W-140 and 85W-140 gear lubes in applications where these viscosities are recommended by equipment manufacturers.

Also don’t forget to look at the RACING gear oil options.

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Posted on January 10, 2012 by , 4 comments

AMSOIL Provides Complete Vehicle Cold-Weather Performance

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Amsoil synthetic oil works better in extreme cold. Extreme cold can cause conventional motor oil, transmission fluid and gear lube to thicken, starving vital moving parts of necessary lubrication. In many cases, thick motor oil will prevent vehicles from starting. Cold, thick transmission fluid results in delayed or sluggish shifts and inadequate protection for bearings, valves and other critical parts. Thick gear lube, meanwhile, requires more energy to turn the gears, reducing fuel efficiency. Because gears and bearings in the axle housing are splash-lubricated, conventional gear lubes that are too thick at cold temperatures can starve internal components of lubrication, which can cause excessive wear and premature failure.
Conventional petroleum lubricants thicken because they often contain paraffin (wax). While modern refining techniques remove most of the wax from petroleum oil, some wax-like molecules remain. These wax-like molecules are soluble at ambient temperatures above freezing, but crystallize into a honeycomb-like structure at lower temperatures and cause circulation problems. At startup, this can leave working parts unprotected while the lubricant warms to a temperature that allows it to flow. amsoil synthetic lubricants do not contain paraffin. Amsoil synthetic oils provide outstanding low-temperature fluidity for fast, dependable winter starts; quick, responsive shifts and immediate startup protection. Superior Amsoil Fuel & Coolant Additives and Amsoil Diesel applications can be especially sensitive to cold-weather issues. As the temperature drops, the wax naturally found in diesel fuel begins to form
crystals. The point at which wax crystals form is known as the cloud point. These wax crystals eventually clog the fuel filter and starve the engine of fuel, preventing it from starting. While low-quality fuels may form wax crystals in temperatures as warm as 40°F, most fuels have a cloud point near 32°F. The point at which the wax crystals clog the fuel filter is known as the cold filter-plugging point (CFPP). amsoil Cold Flow Improver reduces the CFPP of ultra-low-sulfur diesel fuel by as much as 20ºF for increased protection. In frigid conditions, motorists often idle vehicles for extended periods to warm the interiors and defrost the windows. Not only can the practice be inconvenient, it wastes fuel as well. amsoil Dominator® Coolant Boost uses proprietary tiered-surfactant technology to provide quick and effective heat transfer inside radiator and cylinder heads, resulting in faster engine warm-up times. As a result, vehicle interiors warm more quickly and the defroster becomes effective sooner. Amsoil diesel fuel additive. Amsoil antifreeze. Amsoil fuel addetive.

Amsoil synthetic oil.

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Posted on November 21, 2011 by , 5 comments