If you don't have leaks or oil consumption I wouldn't use a HM oil. A good oil has all the additives needed to properly protect and maintain an engine in good condition. If/when you have problems then give a HM oil a shot. I have a vehicle over 30 years old now, and it has never seen a drop of HM oil. At the moment I have no issues that would warrant it. Having said that you can use a HM oil in a brand new car if you desire to.
Why? I've used it off and on since my Corolla has had 66K miles on it has never been an issue sometime HM oils are what's on sale. I've been doing this for over 6 years now. I don't always use it when I've switched back to non HM oil there has never been an issue.
It won't hurt the car. As I said he can use it in a new car if he chooses too. I never bothered with HM oils, I was always able to get deals on the others, and never felt the need for a HM oil. There's nothing wrong with what you're doing either. Different strokes for different folks.
No issue with demars response. Why put a fix to it if it ain't broke.
He said he never felt the need to use it. I haven't yet either but that's not saying it will destroy your engine.
Sometimes it is so cheap I've been tempted to use it in OPE.
Originally Posted By: PWMDMD
I guess what I’m asking is why let it break in the first place? All things being equal as far as price why let the seals lose elasticity with increased mileage and then use try and use something to remedie the problem if you can just use the remedie at no additional cost the entire life of the engine?
Unless I’m missing something here?
Maybe the advertising is working? I haven't a clue. I'm running a van vintage 1988, no oil leaks, zero. The only gasket I replaced was the push rod cover, not a big deal. Would a high mileage oil have saved it? I have no answer for that either, it lasted 28 years. I can guess and say no a HM oil wouldn't have helped, someone else might say it would have. Who would be right? The answer would be a guess, the guy that favors a HM oil would vote in favor, someone like myself would say no.
With regard to Valvoline saying HM oils offer better wear protection. Better than what? Their regular oil? All oils? I was never a fan of Valvoline oil anyway so the point is moot for me. XOM says don't use their HM oil unless you need it. Confusing. If I feel a need for the HM oil I'll certainly use it, I have nothing against it. My prior comments remain the same. A person can use it w/o fear in an old or a new vehicle. I will add one thing to it, if the XOM comments presented here are true, use another HM oil in a new/newer car. XOM doesn't advise you do so with theirs, and their warranty might be in jeopardy if the new car warranty is denied, or no longer in effect, if there is an oil related problem. A long shot, but always a chance.