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

 

[We're Metals]

Once you begin to have oil leaks in my opinion. Just keep doing what you're doing.

As a side note, 88,000 miles is just broken in.

 

[kschachn]

Today if you wish.

 

[Cheetah-kins]

I use 'high mileage' in my own car (1990 with 220K miles), the oil comes in a mix of part dino, part synthetic - I use that one. But there's also full synthetic 'high mileage' oil. If it weren't for economics I'd run the full synth stuff all the time instead of what I use.

All that said, my car has a few minor oil leaks. which is why I use the high mileage stuff. But if it didn't have any oil leaks and economics didn't factor in, I'd just use high quality synthetic oil, wouldn't even bother the high mileage stuff.

 

[Sandstorm]

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

 

[JavierH19]

It has a bit of extra seal conditioners which I'd argue can keep the seals from getting old sooner by being used proactively instead of reactively once leaks start and at worst won't ever hurt. It's very mild and not like a whole bottle at plasticizer such as at205 getting dumped in and causing the seals to over swell and fail.

 

[cheesepuffs2]

PENNZOIL Platinum " High Mileage " looks to be a contender . Has high BORON like that of P.U.P..

This is S.N.+ , GF-5 , should be similar or same as the S.P. , GF-6A .

https://pqia.org/pennzoil-platinum-sae-0w-20-high-mileage-full-synthetic-motor-oil/

Pretty sure more recent VOAs than this on BITOG show little to no boron in PP HM now.

 

[odie]

Pretty sure more recent VOAs than this on BITOG show little to no boron in PP HM now.

Just noticed that , will remove suggestion . Was considering it for next spring due to high BORON . Have to ruin a good thing .

 

[cheesepuffs2]

Just noticed that , will remove suggestion . Was considering it for next spring due to high BORON . Have to ruin a good thing .

From what I recall, Quaker State's full synthetic HM still has high boron.

 

[Urshurak776]

I wouldn't do it today, but I would tomorrow!

Just kidding. HM oils these days really aren't priced any higher than the non HM oils. Won't hurt. I would stick with the synthetic HM in your car though. The blends won't hurt, but you will get maximum protection with the synthetic and price difference is almost negligible.

 

[wemay]

You can switch any time you'd like. If it has the HM same specifications as the non-HM synthetic, it is perfectly fine to use. The moniker "High Mileage" just denotes more seal conditioners and possibly antiwear additives. But again, if both have the same specs, those conditioners and additives fall within the acceptable range for that spec.

 

[JohnnyJohnson]

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

 

[Triple_Se7en]

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

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

 

[Sandstorm]

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

How is this relevant?

 

[02zx9r rev2]

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

I’m sure you know what he is saying

 

[Ayrton]

If you go to a high mileage, stay with a synthetic high mileage.

Unless I have a problem, I prefer the non-HM because they're usually easier to find and sometimes cheaper.

 

[ka9mnx]

Two of my vehicles are well over 200k miles. I see no reason for a HM oil.

 

[Snagglefoot]

High Mileage eye candy in Dexos 1.

 

[Snagglefoot]

And for the Pennzoil fans:

 

[Lockasiam]

High Mileage eye candy in Dexos 1.

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super tech