Have a 2016 Corolla ZR. Have only done oil changes, bought the car at 49Kms its now 105ks. Only thing ive ever need doing is oil.
Both of my Guzzis ran better on Valvoline. This is if you’re in USA
I'm using Valvoline 0W-20 Restore and Protect, changing every 4,000 miles. '23 OBW, 56,000 miles. FYI, I did an oil analysis at my last oil change. Wear numbers were excellent, less than 1.5 ppm/1,000 miles. 3 iron, 2 aluminum, 1 copper over 4,128 miles. Fuel dilution was HIGH though, at 4.3%. They expect 1.5- 1.8% for direct injection turbos. According to the Motor Oil Geek, less than 5ppm/1,000 miles is considered good. I do a fair number of short trips, but also some longer runs. I'm going to go to max of 4,000 miles due to the gas dilution.
I’ve used it, no complaints.
One oil that seems to work from all the videos I've watched for cleaning varnish is the Valvoline Restore and Protect.
I use this on my Hyundai Elantra for the past 100k miles ... It's already at 200k and the engine still feels new ... I use Valvoline for everything including power steering ... Valvoline syn blend is a great oil option ...
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.
Never had any luck doing an oil change every 10K miles on any cars in my fleet. However, with a new car that’s hybrid that I bought last year, I’m praying that I can push the oil change interval every 10K
I learned this the hard way switching to Valvoline Restore and Protect 5W-30, destroyed my bearings just like you.
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