In the second oil change on this 2002 Volvo S60 2.4T I bought last winter. Used the Mobil1 0W-40 based on suggestions here. Car had been fed Castrol blend from the dealership. I've learned already this particular car is prone to burning a little bit of oil. (It burned 9 oz. in 1750 miles from May to August.) used Mobil conventional to make up. I did the math afterwards and figured out I was then running 95 percent full synthetic and 5 percent conventional.
Now, it's tme to make up a little bit again. (It's at the middle of the safe range on the dipstick; I try and keep cars at the top of the range. I'm at 3000 miles on the oil. I could change it all out, could make up more conventional, or add full synthetic. We're talking about 8 oz. or so (which means I've probably already spent too much time thinking about it).
I've been leaning towards just adding more conventional and then changing in 2000 more miles. That would be, roughly, a 90-10 blend.
What would you do?
Now, it's tme to make up a little bit again. (It's at the middle of the safe range on the dipstick; I try and keep cars at the top of the range. I'm at 3000 miles on the oil. I could change it all out, could make up more conventional, or add full synthetic. We're talking about 8 oz. or so (which means I've probably already spent too much time thinking about it).
I've been leaning towards just adding more conventional and then changing in 2000 more miles. That would be, roughly, a 90-10 blend.
What would you do?