If the enigine calls for 5w-30 then the only real reason that you switch to a thicker viscosity is to lessen oil leaks? If yes, than there is nothing wrong with that.
you should never mix regular oil with synthetic. it will harm your engine over time. i would go get everything flushed out then add either one or the other.
530
530
Percentage change: 6.0% increase.
The manufacturer recommends that you use 10W-30 weight motor oil in your 2002 BMW 530 diesel. You can use a 10 W-40 weight motor oil in high mileage engines.
530
530
530 + 50% = 530*1.5 = 795
530% = 530/100 or 53/10 in fraction
Answer: 530 km = 329.326 mi.
It is 530 because 2 is less than 5
The 2006 F-150 owners manual shows ( SAE 5 W - 20 ) You can use synthetic or synthetic blend if you wish as long as it has the API certification mark ( certified for gasoline engines ) and meets Ford specification WSS - M2C930 - A ( for the 5 W - 20 engine oil )