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Lube Filtration
Extended Service

Extended Service Oil and Filters LUBE FILTRATION

Donaldson introduced three extended life lube filters Many older diesel engines don’t get hot enough to really
in the early 1980s for three popular U.S. engine makes: challenge mineral oils that contain antioxidants. With more
Detroit Diesel, Cat and Cummins. Extended service in sophisticated emission control systems, engines may run
1983 was primarily focused on a more robust filter that hot enough to favor synthetic oil.
would last through an extended mileage interval.
While there are clear benefits to synthetic oil, at least two
Today, extended service filters are expected to last to the drawbacks have hindered their wide spread adoption.
next oil change - in some cases this is double or triple The first issue is that synthetic oil has poor solubility for
traditional spin-on lube filters. Another major appeal with additives; making it harder to control for soot and Total
extended service filters is the “green” aspect – the use Base Number (TBN) retention. All the while the base stock
and disposition of fewer filters. synthetic oil may remain useful, soot levels may exceed
OEM guidelines or the oil may become too acidic. Secondly
Extended Service Oil Drains the price for synthetic oils is typically 3 – 4 times the cost
of a comparable mineral oil. Combine the cost with the
The key to any oil drain unlikely prospect of tripling an oil drain and synthetic oil
extension program is doing it becomes cost prohibitive.
safely to ensure not to create
any harmful effects. The proper
way to implement the change Extended Service Filters
that is through oil analysis. Donaldson has two filter types to support customers who
Oil analysis measures critical are interested in extending oil drains.
oil parameters to ensure that Donaldson Endurance Kit (EOA7376)
is Ideal when looking to extend oil
the oil quality and is critical to drain intervals The first is Donaldson Endurance™ filters for those who
establishing a extended drain.
want to maintain oil health over the new drain interval and
Oil Considerations & Extended Drain Filters need a filter than can last as long as the oil.

Today’s mineral based oils are completely adequate for The second is to to apply a Donaldson Endurance™ PLUS *
most heavy duty driving conditions and user needs. The filter that will meet an oil change interval and maintain
formulations have evolved to the point that the serious the oil additives. This filter type has Donaldson Additive
problems of the past (such as viscosity breakdown) are Replenishment Technology – it is a concentrated additive
no longer of concern for most applications. Additionally, inside the filter that slowly releases into the oil during the
the ability to readily combine with today’s additive life of the filter.
packages and significantly lower price has helped
mineral based oils remain the clear favorite. Our Donaldson Endurance filters use Synteq™ media.
Synteq™ is more effective than standard cellulose filter
Synthetic oils can perform better than mineral oils in media at removing small contaminants, it improves
extreme temperatures, both hot and cold. At sub-freezing lubricant flow and offers increased dirt holding capacity for
temperatures, flow properties of synthetics are better. the extended service.
This means faster starts, and faster oil delivery through
the engine. The benefit is better lubrication on start Donaldson Endurance filters are direct replacements to
up and less work for your starting system. Synthetics standard filters – no system modifications and no special
are usually SAE 5W-40 / ISO VG 22-150 viscosity grade disposal requirements
(mineral oils typically being SAE 15W-40/ISO VG 46-150)
and allow a little better fuel economy (1-3%). However,
driving habits have the most influence on fuel economy.

At high temperatures, synthetics are more oxidation
resistant and less volatile than mineral oils. Less
volatility can be a benefit, because less oil will be lost
by evaporation, and may reduce the to top-off oil as
frequently. High temperature oxidation resistance isn’t
always a benefit.

www.donaldson.com Engine Liquid Filtration • 71