Can I use Havoline Energy in my diesel engine car, 4-wheel drive etc in order to reduce my fuel bill?
The answer to this is a qualified yes. Havoline Energy meets ACEA B1, a European automotive industry specification which defines fuel efficient engine oils for light duty (ie not truck, bus etc) diesel engines. So if your owner s manual calls for an oil meeting ACEA B1, or allows the use of low viscosity engine oils then you may certainly choose to use Havoline Energy. However, if you live in a part of the world where diesel fuel sulfur is still relatively high (e.g. parts of Africa and the Middle-East) then you may need to use a shortened drain interval in comparison with diesel engine oils specifically developed for use with moderate to high sulfur content fuels.