Hi,
Anybody knows what is the recommended engine oil for a T Range 460? I hear some of them are better for fuel economy and other last longer, is that true?
In general, a lower viscosity oil will be better for fuel economy, and also in preventing wear when a cold engine is started.
So a 10W-30 will be better than a 15W-40 in that respect. However the thinner oil may offer less engine protection at really high temperatures.
Best bet is to stick to what is says in the handbook, paying particular regard to the ACEA rating (ie E9, or whatever) and the SAPS content…if the engine has a PM filter, then a High SAPS oil will permanently clog it.
My first reply RTM.
My second a low saps oil.
Third extended drain or not.
Answer 5w30 long drain, low saps, fully synthetic. Change at 75k. 100k is a bit to long, also depends on type of work.
Motorway pounding 75k, stop/start multi drop and site work 50k intervals
I know this sounds daft but oils have a higher viscosity when they are hot eg 10w /40 is thicker at 80 degrees than at 20 due to binders in the oil. The idea is that when an engine is cold its easier on the starter to turn the engine over also the oil puts less load on the pump and lubricates journals etc quicker.
The first viscosity number is when the oil is cold (20 degrees ) and the second number is at 80 degrees.
The oil appears to be thinner at high temperatures but it “sticks” to bearing surfaces longer.
Bking:
I know this sounds daft but oils have a higher viscosity when they are hot eg 10w /40 is thicker at 80 degrees than at 20 due to binders in the oil. The idea is that when an engine is cold its easier on the starter to turn the engine over also the oil puts less load on the pump and lubricates journals etc quicker.
The first viscosity number is when the oil is cold (20 degrees ) and the second number is at 80 degrees.
The oil appears to be thinner at high temperatures but it “sticks” to bearing surfaces longer.
Yep, sounds daft…for a very good reason.