15 is thicker oil and for bigger engines.
Selina Corwin
15 is thicker oil and for bigger engines.
10W40 or 15W40
The main difference between 10W-40 oil and 15W-40 oil is that 15W-40 oil has a higher viscosity than 10W-40 oil. 10W-40 oil allows the engine to run freely.
There should be no problem with mixing them.
10w40-15w40
10W40 or 15W40 semi-synthethic
A diesel engine would use 15w40 a gas engine could use 15w40 or 10w40
Viscosity and additives.
10w40 is thicker (but only when hot, they are the same thickness cold.)
Yes of course you can mix them what what would be the reason to do so.
probably not but 10W40 is recommended
according to the Peter Russek pocket mechanic Manual it says 10w40 or 15w40