They shouldn't if they're functioning properly.
Rotella T is the best oil, in my opinion, for diesel engines.
There is not a whole lot of difference if you are using the oil in an older diesel engine. The diesel oil of today has special additives to combat the soot buildup in the oil from the EGR. The diesel oil will get dirty a lot sooner on the late model engines. A 15w40 for a gas engine can be used in a diesel.
my diesel engine needs topping up with oil every 2 months do I have a problem Yes you do.
Need to know what engine you have in order to answer this. In 2003, Freightliner had the option of Detroit, Cummins, Caterpillar, and Mercedes-Benz diesel engines.
"Diesel oil" or "Heavy oil" is another term for diesel fuel. Not to be confused with "engine oil for a diesel engine" which means lubricating oil specially formulated for use in diesel rather than petrol engines.
I am not sure what you are asking but putting oil for diesel engines in a gasoline engine with some oil in it would not be good, or vise versa
no diesel engines run on diesel or bio diesel or refined vegetable oil..
The larger a diesel engine cylider is, the cruder the fuel can be and still work. Also, the larger the cylinder, the more efficient the engine. "Base" or bunker oil is a lot cheaper than refined highway diesel.
buses
5w30w full synthetic diesel oil
Yes you can mix oil and diesel for burning brush and stuff just don't put it in any engines!
If you mean motor oil, yes.