Engine oil grades / viscosity grades BMW specifies different grades of engine oil, depending on the engine and vehicle model. Specifications or descriptions other than those given here, for example "high lubricity oil, fully synthetic" etc. bear no relevance to their suitability for use in engines of the BMW Group. Longlife-04 oils These have been developed to guarantee an optimum service life for the particulate filter in diesel engines. These oils are stipulated for all diesel engines with particulate filter, but may also be used in almost all other BMW engines. Like Longlife-01 and Longlife-01 FE oils, they satisfy currently BMW's most stringent quality requirements. Longlife-04 oils must not be used in BMW spark-ignition engines in countries outside Europe (EU plus Switzerland, Norway and Liechtenstein). Longlife-01 oils The quality of these oils is comparable to that of Longlife-04 and Longlife-01 FE oils and these oils can be used in most BMW engines. Longlife-01 FE oils Because of their particularly low viscosity, these oils are able to favourably influence fuel consumption. However, they are only to be used in engines that have been specially designed to run with such lowviscosity oils (spark-ignition engines with Valvetronic). Longlife-98 oils Satisfy specific requirements for extended oil change intervals that were introduced in 1998. Their quality is no longer adequate for the current range of spark-ignition and diesel engines. <_<