Is there a new oil filter for BMWs with extended mile oil change interval engines?
According to the AERA technical committee, BMW has revised oil filters for its extended oil change interval engines. M52TU, M54, M62 and M73. BMW has approved a 15,000-mile service interval for certain high performance vehicles when service is performed by a BMW dealer and mandated the use of synthetic oil supplied by BMW.
A new filter element has been developed for use with BMW models with 15,000-mile service intervals. This filter must be used whenever these engines are serviced. This new oil filter element utilizes an improved filter paper, which prevents filter deterioration caused by exposure to high oil temperatures over extended time. The new oil filter element was phased into production on M54 powered vehicles in September of 2000 and on all M62 and M73 powered vehicles in July 2000.
(Substitution of another filter or oil in these engines may prove harmful to the engine if the filter element deteriorates) At this time, BMW has not approved any other filter or oil for use on these engines.
Is there a way to effectively clean the carbon out of 1998-2001 Audi 2.8L 5-valve engines?
The AERA Technical Committee offers the following information regarding reduced compression on 1998-2001 2.8L 5V Audi engines resulting in poor performance, hard starting or no start conditions. The cause of this condition may be carbon build-up on engine valves.
To cure and help prevent reoccurrence of this condition Audi recommends installing a "hotter" thermostat and performing an approved carbon cleaning process using Wynn