Fuel Economy Comparison:
at WalMart.com (2)
through Amsoil.com (3)
|Price per gallon||$12.97||$36.05|
|Gallons used in truck||11||11|
|Cost per servicing||$142.67||$396.55|
It must be noted that the calculations of the truck lubricant costs alone do not tell the whole story either, for using a synthetic oil may have this effect on maintenance:
The referenced website said that the fuel economy comparison was conducted over 120,000 miles.
If a truck running conventional oil
has its oil changed every 30,000 miles, then that means that there will
be 4 servicings over that period.
If the synthetic oil could possibly be used twice
for half as many servicings (a drain interval of 60,000
miles), that reduces the overall cost versus 4 servicings.
To answer our question about fuel economy comparison, does the savings in fuel from using the synthetic oil include the truck lubricant cost? No, because it isn't meant to. But if we add in the truck lubricant cost -- with all else being equal in the trucks' operations -- the cost difference shrinks a bit.
Money saving tip: Save yourself the aggravation of missing part of the cost of your truck operations when you make calculations of this kind.
A fuel economy comparison is one thing. But you need to keep in mind all of the factors that affect your truck operations, not just the number of gallons of fuel that you use. This includes not only lubricants but also any changes to your truck's aerodynamics such as side skirts, wheel covers, and vortex generators, as well as fuel additives and fuel filters. Keep up with which changes produce which returns on investment. For best testing, change only one thing at a time and measure, measure, measure.
If you are comparing the effect of lubricants on diesel usage as part of your overall truck operations, do not forget to include the cost of lubricants in your calculation! This could also include the reduced number of servicings and longer distances or times between an overhead.
Shop around to find the truck lubricant that is right for your truck, including the type (conventional or synthetic) and grade. Explore the possibility of bulk pricing (possibly through your trucking company, a network or national account). Buying oil by the gallon (or smaller amounts) may be the most expensive way to buy it, especially if it is purchased in a truck stop travel store.
Recommended Trucker Accessories
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