Let’s have a look at the five Low SAPS oil and some of the popular applications. Level 4: are the crucial manufacturer specifications Level 3: the Low SAPS ACEA specifications in this article Using that process: All Low SAPS oils are fully synthetic – so that takes care of level 1 In the first CAT magazine article (August 2020) we talked about the 4 level approach to understanding engine oils. Additionally the oils have a specific HTHS viscosity range.Ĭommercial oils use the E prefix and there are currently two Lows SAPS commercial oils: E6 and E9 Low SAPS oil is what is taken out and not what is put in to the oil. That about it from an oil technical view. The ACEA European Oil Sequences 2016 will give you all the detail if that is your particular interest. Low SAPS oil have their own set of HTHS viscosity ratings. In particular bearings, the camshaft, the piston rings and liner. High Temperature High Shear HTHS measures the viscosity of an engine lubricant at 150☌ and simulates the narrow tolerances and high speeds between moving parts in a hot engine. ![]() If oil can be squeezed through the engine bearings in a more slippery way - there is a fuel saving benefit. Let’s do a brief recap of what High Temperature High Shear HTHS is all about. In last month’s CAT magazine we took a look at HTHS viscosity. The oil manufacturers have included a set of HTHS viscosity rangesfor Low SAPS oils. Just reducing the amount of Phosphorous and Sulphur additives in Low SAPS oil is not the end of the story. (Alternative additives are used to ensure a balanced oil formulation that gives the same protection) In both instances ACEA set limits as to how much Phosphorous and Sulphur can be used. It’s when the oil thickens up and causes sludge) It too can block the DPF (Oil oxidation is bad news for any engine. The trouble is, that when it is burnt, it blocks the DPF - in addition the Phosphorous can poison the GPF (Gasoline Particulate Filter) in petrol engine cars. The Phosphorous is an anti-wear additive. Moving on to the Phosphorous and Sulphur: These are additives that are added to the oil. This is the residue that blocks the DPF when Phosphorous and Sulphur additives are burnt in the oil. The “SA” is Sulphated Ash, “P” is for Phosphorus and “S” is for Sulphur.Ī neat explanation is that certain additives are limited in Low SAPS oils – it is not an extra portion of additives. The important take is that the five Low SAPS oils all have specific specifications, they are just different – We will return to how different they are in a moment. It’s not a case of good, better and best as you go through the 1 to 5 categories. ![]() One question that is often asked is what is the difference between the five Low SAPS oils? We now have five Low SAPS car oils and two in commercial oils.ĪCEA - the European Automobile Manufacturers' Association gave the Low SAPS oils a specific specification starting with C - They follow a logical sequence of C1 C2 C3 C4 C5. In helpful oil industry fashion, one Low SAPS oil wasn’t enough. The oil manufacturers came to the rescue and developed a set of Low SAPS oils. ![]() Low SAPS oils suddenly became rather important because the DPFs were getting blocked by the oil that was available at the time. Let’s see if we can answer some of the common questions about Low SAPS oils and ease the brain strain and ambiguity!ĭiesel Particulate Filters, DPF, came on the scene in mid-2000 and more recently Gasoline Particulate Filters, GPF.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |