Hello people I have heard that in a car with gas system a special lubricant that provides for valve cooling, which can be installed. With me in the Omega I did not have this lubricant installed by the previous owner the gas system at approx. 60000 km 2008. My Omega has now 132000 km down without this lubricant. My question to you I want to have this lubricant installed for the valve cooling should I do this or do not need that. I did not hear the Mercedes and BMW that, because the valves installed by them are not overheated so much but if that is true I do not know DANKE MFG