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There is a risk only if the car burns oil and the gain will be using oil he already has.

Town Cars came with the 4.6 Liter V8

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.

No reason at all.

My 02 TJ with the 4.0 has been on Rotella T6 5W40 since it's first change 21 years ago and never one issue.

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.

Are you serious? If so do not maintain your vehicle yourself. Are you confused about the difference between rubber and chain?

Which country? Not the U.S.

Not my 09, just 4 in the back.

I totally agree with you. I've been running Mobil 1 15w50 in all my on and off road bikes and side x sides for years with zero issues.

Exactly.

Run it , it will not hurt a thing. I have never refilled the factory fill with their recommendation. These low viscosity grades are purely for "CAFE" standards that might give an extra mile or two per tank full.

I respectfully disagree with your logic. I do not believe fluids can be too clean.

It will not cause problems changing the fluid too often. The only downside will be cost. If you want to drain and fill as early as every oil change go for it, won't hurt a thing (won't really help at that frequency, but will not hurt anything).

Spray it with WD-40 let soak for a few minutes add wipe away. The plus side is WD-40 is harmless to the finish.

It was a dealer add on option, not factory.

There is a big difference between "recommended and required" Very few cars "require" premium, but they have more power when higher octane is used. Recommended does not mean mandatory.