Full synthetic or high mileage

[buckydent78]

I own a 2017 rav4. Fwd. 88k on clock. Been using full synthetic every 5k. When, if ever, should I switch to high milage? Thanks! Edward

 

[RooflessVW]

You can run a high mileage oil in a brand-new car as well. No issue...

That's what I'm doing...

 

[Triple_Se7en]

I own a 2017 rav4. Fwd. 88k on clock. Been using full synthetic every 5k. When, if ever, should I switch to high milage? Thanks! Edward

Switch when an issue with the oil (like leaks or consumption) exists.

Also ask yourself why no new passenger vehicle manufacturer runs their new engine down the assembly line with high mileage oils. That alone should put up some sort of flag with you.

 

[Shel_B]

What car / SUV vehicle manufacturer uses high mileage oil as the factory-fill?

Even though an High Mileage oil isn't used from the factory, it doesn't mean it can't be used with new or low mileage engine.

 

[kschachn]

Also ask yourself why no new passenger vehicle manufacturer runs their new engine down the assembly line with high mileage oils. That alone should put up some sort of flag with you.

No, it should not. That is a silly argument without merit.

If the oil carries the API license, recommended specification or manufacturer approval then use it.

 

[JavierH19]

Switch when an issue with the oil (like leaks or consumption) exists.

Also ask yourself why no new passenger vehicle manufacturer runs their new engine down the assembly line with high mileage oils. That alone should put up some sort of flag with you.

It's not because it's harmful but because they're only going to spend extra $ having their oil supplier put conditioners in a new engine when they're not needed and they're already penny pinching as much as they can. If I could get hdeo and euro oils in HM variants I immediately would but there aren't.

 

[barkingspider]

As soon as you find it on sale with a rebate!

This ^

 

[Triple_Se7en]

Even though an High Mileage oil isn't used from the factory, it doesn't mean it can't be used with new or low mileage engine.

Again, use your imagination (in regards to brand spanking new seals) and why they don't.

(Javier) it wouldn't cost a penny more for the manufacturer to use High Mileage oils at the factory. Yet they don't. Does it really make sense to mess with a seal that's brand new?

Why in the world anyone would anyone use High Mileage oils in a new passenger vehicle? There's no need to repair the seal and no need to restore some of it's elasticity.

Leave things alone that are brand new and work 100% of it's intended job.

 

[radiometer]

Terry Dyson stated that HM oils are fine in new engines.

 

[02zx9r rev2]

Again, use your imagination (in regards to brand spanking new seals) and why they don't.

(Javier) it wouldn't cost a penny more for the manufacturer to use High Mileage oils at the factory. Yet they don't. Does it really make sense to mess with a seal that's brand new?

Why in the world anyone would anyone use High Mileage oils in a new passenger vehicle? There's no need to repair the seal and no need to restore some of it's elasticity.

Leave things alone that are brand new and work 100% of it's intended job.

Why get worked up over something that someone else does

 

[Shel_B]

Again, use your imagination (in regards to brand spanking new seals) and why they don't.

(Javier) it wouldn't cost a penny more for the manufacturer to use High Mileage oils at the factory. Yet they don't. Does it really make sense to mess with a seal that's brand new?

Why in the world anyone would anyone use High Mileage oils in a new passenger vehicle? There's no need to repair the seal and no need to restore some of it's elasticity.

Leave things alone that are brand new and work 100% of it's intended job.

The question is not is High Mileage oil needed, but can High Mileage oil be used in newer engines. While I agree that it's not needed, using it won't be harmful or cause any problems.

You've been touting the same mantra since at least 2017. I applaud you for sticking to your position, somewhat like a fly on flypaper.

T

Post in thread 'High Mileage Oil in a Low Mileage Engine?'

Jan 22, 2017

Originally Posted By: TheLoneRanger
Is there any advantage in using an HM synthetic oil in
a lower milegae engine? Any drawbacks?

The oil in question is Valvoline Synthetic 5w30 High Mileage
(for engines with over 75,000 miles).


If your engine does not need any benefits that high mileage oils offer, I wouldn't use it.
Don't attempt to fix things that aren't in-need of fixing. If you have engine issues...OK! If not, then continue with the standard varieties.

• Triple_Se7en

 

[kschachn]

Again, use your imagination (in regards to brand spanking new seals) and why they don't.

(Javier) it wouldn't cost a penny more for the manufacturer to use High Mileage oils at the factory. Yet they don't. Does it really make sense to mess with a seal that's brand new?

Why in the world anyone would anyone use High Mileage oils in a new passenger vehicle? There's no need to repair the seal and no need to restore some of it's elasticity.

Leave things alone that are brand new and work 100% of it's intended job.

We don’t need to when you’re doing it so well.

 

[4wd]

You've been touting the same mantra since at least 2017. I applaud you for sticking to your position, somewhat like a fly on flypaper.

 

[Plumb Bob]

I only use HM Quadruple Action Oils in new cars.

 

[Shel_B]

I only use HM Quadruple Action Oils in new cars.

I use this (or the equivalent) in all my important vehicles. No viscosity breakdown, no additive shear. Great stuff! FMX Technology for the win!

 

[4wd]

I use this (or the equivalent) in all my important vehicles. No viscosity breakdown, no additive shear. Great stuff! FMX Technology for the win!

View attachment 250615

Non detergent ? Okay

 

[Shel_B]

Non detergent ? Okay

Detergents and additives break down and cause dirt and junk in an engine. Look at all the problems with stuck and gummed rings when using so-called quality oil. Not for me. I want pure, old fashioned oil. If it was good enough for my grandpa, who lived to 97yo, it's certainly good enough for me. He had no gunk in his arteries and he NEVER drank detergents.

 

[kschachn]

Detergents and additives break down and cause dirt and junk in an engine. Look at all the problems with stuck and gummed rings when using so-called quality oil. Not for me. I want pure, old fashioned oil. If it was good enough for my grandpa, who lived to 97yo, it's certainly good enough for me. He had no gunk in his arteries and he NEVER drank detergents.

I just hope no one believes this funny little farce

 

[SR5]

All API oils contain seal conditioners, above the minimum required value, but below the maximum allowed value. Due to API requirements that apply to both regular and high mileage oils.

In Australia almost nobody buys High Mileage oils. Instead we just step it up an oil grade as the car ages. For example 0W20 when new to 5W30 as the car ages.