High Mileage Oil in a New Engine?

[gary_in_neenah]

At the risk of starting another Oil Thread (God Help Us) I've got a question to throw out there. I do the oil changes on our vehicles and after purchasing the oil for the wife's car I noticed that it's labeled "high mileage" (in small print) but her car is only a year old with about 12K miles. The engine requires 0/20 Synthetic and my choice was the Mobil 1 product. My question is, will it harm the engine by using a "high mileage" product in a newer engine. I know that the high mileage oils have additives for engines that have 75K+ miles and I'm wondering if using H.M. oil will harm the engine. It's a 2017 Subaru under full warranty.

Oh, and before posting I browsed elsewhere on the Net to find answers varying from "don't do it" to "just pour it in". One guy even recommended it so I'm hoping for some more clarity from the folks on J.D. Whadda ya think?

Gary

 

[euphoric1]

Gary, I don't know If I can completely answer your question or help with your decision but I have always been a huge fan of synthetics in my vehicles, I run rotellat t6 5w/30 synthetic in my diesel shop truck, mobil 1 in my mustang and mobil delvac 15w40 in my boat. It is my understanding that the high mileage oils are a synthetic blend, are a little heavier than full synthetics, and have seal conditioners and burn at a much higher temperature than conventional oil which helps with higher mileage engines that may burn oil, or have higher amount of wear on surfaces where oil provides the bearing, will it hurt a low mileage engine I would have to say no, is there an advantage to using it, I don't think there would be any, but I am a user of the mobil 1 products and a big fan of synthetics in general, with todays newer engines, tighter tolerances and smaller oil passages proper viscosity is very important.

 

[latner]

Personally, if the oil is the correct weight, use whatever you want. Using a GOOD filter and changing the oil when it needs it are most important. I've spent some time on "Bob's the oil guy" site...alot of good information there.

 

[gary_in_neenah]

Thanks guys, that's pretty much what I was thinking. I think sometimes we tend to "over think things" especially when it comes to oils. I also believe that a lot of the choices out there are for marketing purposes. i.e. High Mileage, Advance Fuel Economy, etc.

Agreed, quality filter and recommended viscosity.

A New World Record for an Oil Thread, 4 posts and we're done!

 

[old abe]

Thanks guys, that's pretty much what I was thinking. I think sometimes we tend to "over think things" especially when it comes to oils. I also believe that a lot of the choices out there are for marketing purposes. i.e. High Mileage, Advance Fuel Economy, etc.

Agreed, quality filter and recommended viscosity.

A New World Record for an Oil Thread, 4 posts and we're done!

Gary,your owners manual will give you the correct oil spec's to use in your vehicle. The oil container will have the specification of the oil, listed on the container. Very easy to identify the correct oil. Viscosity included as part of the specs.