GB INTERCOOLER LSC 10W-40 is a heavy-duty diesel engine oil, formulated using advanced Group II base oil technology and enhanced additive systems, for use in heavy-duty diesel engines in severe on- and off-highway applications. It may be used in both Euro V and Euro VI engines as well as Tier 4 non-road diesel engines, where a low SAPS product of this quality is specified (sulphated ash, phosphorus and sulphur). Developed to maximise the life of the particulate trap filter, it is backwards compatible and therefore may also be used in older engines.