Maintenance is the key. Regular fluid dump and fills every 25,000 to 30,000 miles , which is as simple as can be, and you'll be fine. There is a cartridge filter in the warmer that I change about every 40,000 miles. 135,000 miles and zero issues.
Octane is just rating for resistance to preignition in high compression engines. If you don't need it you're just wasting money and most cars don't need it. As far as cleaning valves it will do nothing in a GDI as the fuel does not contact the valve stem as in conventional EFI systems.
Just because an oil rating changes it doesn't mean the product didn't already meet the new specs. This is way over thought. Your engine is not going to fail due to oil rating changes. It ran fine for a period of time with the old rating just fine. If anything oil is becoming less protective with...
A modern charger will gradually charge with a tapering charge until fully charged at which time a good charger stops charging and switches to a float charge. A float charge will maintain by only adding a light charge when voltage drops below a specific level just a hair below full charge.
Did not help mine. I did however repair with this simple kit. If your slightly handy this is a pretty simple fix and much cheaper. https://spring-start.com
The exact same results I obtained. Pennzoil was terrible, then tried Royal Purple and it got a lot better, then finally switched to Redline MT90 and have never looked back.
1969 Fiat 850 Coupe. Europeans can sure make a pile of crap. By far the worst car I've ever owned and turned me into a Fiat hater and the current Fiats will makes many more haters. Italians make pretty cars but pure crap.
I wouldn't hesitate to use it. I use Rotella in my older flat tappet cars, my motorcycles and my gas engine boat. The only reason it lost its gasoline rating was the high ZDDP with is important for older engines. Use with confidence.