Valvoline protect and restore has more detergents than any other I believe to clean out thew gunk. I've been running it in my car for 3 oil changes now.
I've seen lots of videos showing the Valvoline restore and protect oil helping to clean engines. If you go that route I'd recommend replacing the oil filter after 500 miles then again at 2500 miles to keep the filters new for any gunk that gets freed up.
Use Valvoline Restore and Protect oil if possible
Valvoline full synthetic, 5w-20, She has 151k and counting.
The recommended Castrol isn't bad, but I've had better success with Mobil1 and Liquid Moly.
Try using liqui moli engine oil, change the air filter too.
Use only Valvoline restore and protect every 5 k miles. Keeps engine clean keeps and oil use normal
If it's burning oil try a few change intervals with Valvoline Restore and Protect. It's supposed to remove deposits on the piston rings and reduce oil consumption.
My GL550 has about 106k miles on it, just did an oil change with LiquiMoly 0w-40 and 2 bottles of LiquiMoly ceratec. Drove it kind of hard for a minute or so. Then noticed when I got back it had this noise.
I do believe that Valvoline R and R can cause oil leaks. I have noticed that in a couple of cars.
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