The most important benefit truck owners get from engine oil performance is protection from engine damage. Changing oil more often than required will always be preferable to a breakdown, necessity of an engine overhaul or rebuild, and all the accompanying downtime.
But many owners do extend their oil drain intervals out beyond the tried and true 10-15,000-mile threshold.
Overdrive research in 2025 revealed that about two-thirds of owner-operators said they’re extending oil changes beyond the traditionally conservative 15,000-mile drain.
How far you can or should push the oil-drain interval boils down to your comfort level.
With OEMs recommending intervals as long as 75,000 miles, depending on the specific engine and its application, changing oil every 10K-15K miles is playing it extremely safe, yet it could also be costing you money on oil and filters you don’t need to spend.
For some, though, peace of mind is priceless, with the knowledge that clean oil is flowing.
How owner-operators roll past traditional intervals
Avoid idling. The most common tactic to achieve the extension, utilized by 36% owners responding to that 2025 survey, is simply avoiding engine idling by utilizing an auxiliary power unit (APU) or other means of shore power/alternative climate control. While OEMs make their ever-lengthening change-interval recommendations contingent on fuel mileage achieved, idle time should be another indicator owners use to determine oil life.
Oil/fuel additives. Behind reducing idle time in the survey results, between a fifth and a quarter of owner-operators reported using oil and/or fuel additives to get more life out of their oil.
Many owners think of additives as a winter necessity to prevent gelling, but not necessarily needed in the summer when cold temperatures aren’t a concern. Longtime Howes Diesel Treat winter fuel anti-gel additive provider Howes has also offered its all-weather Diesel Defender additive as a "maintenance dose" to promote cleaner burns, according to company President Rob Howes.
A long list of additive and fine-filtration providers have found similar results.
[Related: Fuel treatments increasingly part of owner-operators' PM routine]
Oil sample analysis. As suggested by the prior part of the Equipment and Maintenance section of the Partners in Business playbook, putting oil sampling and lab analysis in your PM routine could be invaluable. Not only will it show if your oil is still in good-enough condition to protect the engine, it can also surface other issues that need to be addressed in both the engine and emissions systems, such as if there’s diesel in the oil (potential injector issue) or something else.
Confidence in oil performance, if you trust what analysis shows you, is a by-product.
Bypass filtration systems. With the ability to remove ever-finer particles from the oil itself, can play a role, though they're only being used by about 9% of owners, according to Overdrive's research.
Read next: Beating predatory truck tows -- the Partners in Business guide
