mixing oils

[celm]

what happens if u mix full synthetic with non-synthetic oils?does it get fomy?give u oil pressure problems?

 

[GTIR-LOZ]

why would you want to :?: prob wont make much diff as long as the rating is the same but im not totally sure

 

[jasegould]

Generally a no no...not so important now but older oils used to foam up a bit i heard.
The most important thing is to run your car on one of the other, and not keep changing between the two

 

[celm]

thanks mate,i just wanted to know