The push for cleaner and more efficient engines has seen the development of the diesel engine spiral over the last decade. The modern day diesel is now a sophisticated and complex drive train that is finding its way into more and more passenger car and light commercial vehicles due to the torque nature of these engines, their outstanding fuel economy, longevity and their eco-friendly emissions.
Along with diesel engine technology, oil technology has significantly improved over the years with specialised products being required to cater for the specialised needs of today’s modern diesel engines.
Modern Diesel engines may be fitted with a Diesel Particulate Filter (DPF). These DPF filters, form part of the latest generation systems, designed to clean exhaust emissions in many late model diesel vehicles.
Vehicles fitted with DPF’s generally require a Low or Mid SAPS engine oil. SAPS stands for “Sulphated Ash, Phosphorous and Sulphur”. A low SAPS engine oil has a lesser amount of these elements than a standard engine oil. The levels vary depending on the type of oil needed. Low SAPS oils are generally used in modern turbo turbo diesel engines that are fitted a diesel particulate filter or in modern petrol engines to assist in fuel economy gains.
To learn more about DPFs and their function Click Here.
Diesel Particulate Filters, run through a cycle called "Regeneration" where they burn off collected diesel particulate matter. Driving conditions and the way a vehicle is driven can sometimes effect the way in which a Diesel Particulate Filter operates. Occasionally, they can be blocked when the regeneration process cannot clear the filter. Penrite has added a brand new technology into filter regeneration with new DPF Cleaner that can clear 1st stage DPF blockage.
To learn more about ENVIRO+DPF CLEANER Click Here
Some vehicles also use a system called SCR. This generally used in truck engines but has also been finding its way into the passenger car and light commercial market. This system utilises a catalyst reduction agent such as Adblue®. This is an Aqueous Urea Solution that is injected into the hot exhaust gas prior to the gas reaching the exhaust catalyst or DPF.
When the solution makes contact with the hot exhaust gasses, it releases ammonia. When this reaches the catalyst (DPF), this in turn causes a reaction where the noxious gases are broken down into Nitrogen, Oxygen & Water. The effect of this reaction is that these SCR systems reduce noxious emissions to almost zero%.
To learn more about PENBLUE (ADBLUE) Click Here.
Oils specifically designed for diesel cars generally have an API rating the starts with an “C” which stand for “Compression” ignited engine followed by a second letter that designates its current specification. The higher the second letter in the alphabet, the later the specification of the oil. The latest specification is currently API CJ-4.
Diesel oils may also have a European rating called ACEA. If the oil has an ACEA rating of B# or E#(# = number), this designates it suitable for use in a diesel powered engine. The “B” is for light duty and “E” is for heavy diesel (“E” >3.5 tonne GMV). Generally the higher the number, the more recent specification e.g. ACEA B1, B3, B4, B5 etc.
ACEA diesel engine oils can also have a “C” classification. The C stands for Catalyst Compatible. These are the Low SAPS oils for Modern Diesel engines that may be fitted with exhaust catalysts or a Diesel Particulate Filter (DPF).
It is imperative that the correct oil is used as extensive damage may be caused by using the wrong product or even the wrong specification. It is also important in vehicles that require an ACEA C grade oil to get the correct specification.
There are different chemical limits on these oils so using the wrong product has the potential to cause significant damage and void the manufacturer’s warranty. In the light diesel category there are 4 Main C grades, these being C1, C2, C3 & C4.
Penrite recommends the right product for the right application. Click here to visit the Penrite Recommendation Guide.