To limit the amount of pollutants emitted into the atmosphere, Isuzu industrial vehicles can be fitted with a particulate filter known as DPD.
NOTE: DPD is the name chosen by Isuzu for their particulate filters. They are based on DPF technology without any need for additives.
During the regeneration phase of a particulate filter, the engine oil inevitably degrades, both because of high temperatures, and, especially, because of the post-injections of fuel that, remaining un-burned, drips along the walls of the cylinders and is deposited in the sump, thus raising the level above the allowable limit. The increase of the oil level also leads to the loss of viscosity of the lubricant.
This phenomenon is directly linked to the frequency of regeneration of the filter and will be of greater magnitude in vehicles used primarily in the urban environment or for daily short distances at low speed.
The dipstick for checking the engine oil level has 3 reference marks.
If the level is between the "minimum" and "maximum for checking" (references "1" and "3"), the quantity of oil is within the tolerance specified by the manufacturer.
Should the reference level be beyond "3" it is ABSOLUTELY necessary to replace the engine oil.
NOTE: Always use only lubricants approved by the manufacturer. Please consult your owner's manual supplied with the vehicle.
WARNING: The makes and distinguishing signs of the vehicle manufacturers included in this document are only provided to inform the reader about the potential suitability of the said TEXA products to be used for the vehicles of the above-mentioned manufacturers. References to makes and models contained in this document are to be considered only as a rough guide.