Q: OIl viscosity question
I have a vehicle that wastes about a quart of oil for every 4000 miles driven, which is when I personally due my oil change. I use 5W-30 Castrol synthetic oil and my car has about 122,000 miles. I also use a good filter to accompany the good oil I put on my vehicle. Is it safe to put a more viscous oil and see if it looses less than with the 5W-30 oil I usually put?
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