15 is thicker oil and for bigger engines.
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
probably not but 10W40 is recommended
Yes of course you can mix them what what would be the reason to do so.
Viscosity and additives.
10W40 is a thinner oil, and would allow the engine to run more freely, and although both are suitable for winter usage, a thinner oil will usually help the engine start more easily in cold weather.
according to the Peter Russek pocket mechanic Manual it says 10w40 or 15w40