Engine oil Castrol or VALVOLINE
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
Had an 02 explorer with the 4.0 that had 286,000 and still running like a champ when I sold it. It was on its second transmission and everything in the vehicle was falling apart but that motor never once had an issue. Regular maintenance and oil changes every 10 to 15k using Castrol GTX fully synthetic
Valvoline full synthetic, 5w-20, She has 151k and counting.
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.
What I would do is have the oil changed but make sure you use Valvoline Restore & Protect and a new quality filter (OEM Toyota, Wix, Mobil 1). Drive the car about 1600km, then do the oil change again using new oil and filter, drive again for 1600km, do it a 3rd time.
I burn a little bit of oil and started to run the Valvoline restore and protect 5w30 in my n18 r56 with 178k miles (286k km). Hard to tell what burns vs leaks out though.
One time I had the oil bug bite (keera) and I decided to get the best oil. Castrol (I don't remember the number) but it was 340 AED for a gallon. I poured it into the engine and it felt good. That weekend took it for a desert drive and during one of the breaks, the entire oil just leaked out of the main seal. The oil was so good that the engine didn't have the tolerances to hold it back.
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