9-18,
Q10. On a cold day the oil will be thicker ( one reason why your car turns over slower on a cold day ) although the pressure will be higher ( until it warms up) your oil flow around the engine will be reduced ( more wear to your engine in the first 5 minutes than 100 miles or more warm). Normal.
Q7. I've referenced this one and found the answer to be ' Gas and fluid'. Now i am confused, can someone clarify please.
D.J.