High-mileage synthetic oil?

Any one using high-mileage synthetic oil ? If so what results have you noticed ? Would you recommend it ? If so why ? Any experiences and or links appreciated.. I have 134000 and using Synthetic every 5K - runs great - seen 2 B a leak in the right rear corner of the head gasket. Thanks in advance.

 

Take a look here.

https://www.tacomaworld.com/threads/switching-to-full-synthetic-at-130k.669573/#post-23500439

Also are actually referring to the Valve Cover Gasket?
It’s kind of common for them to leak in earlier Tacomas.
I have not seen many reports of it on later years.

I personally run Conventional or High Mileage Synthetic Blend.
But it just depends on the price. Never run full Synthetic that I know of.
As I usually use the coupon for Firestone or Free Service Tire (Goodyear)

Yeah, I know.
I should do it myself.
But for about $27, I don’t have to “get dirty” and “clean up”

 

Thanks - Didn't cost you much to keep clean !

 

Most high-mileage motor oil, whether synthetic or conventional, have additional seal conditioners that could help prevent leaks from starting. Additionally, depending on the manufacturer, they also can have more detergents designed to clean out sludge inside the engine, plus other additives meant to reduce wear.
Yes, I would recommend high mileage oils on engines with 100K+ miles. You will likely not see immediate results but the potential benefits are worth the extra $2-3 per jug. Over on the oil analysis thread, you can see that high mileage oils do have more additives than the non-high mileage oils.

 

I've used mobile1 synthetic high mileage 5-30w in my tundra for years once it passed 100k miles...never had as issue it kept the motor running still like new even after close to 300k miles. Can't beat the price either at wally world.

 

Thanks "Over on the oil analysis thread" is that Bob the oil GuY ?

 

I believe the only difference between high mileage synthetic oil and synthetic oil is marketing

 

300K sounds good 2 Me ! I started using synthetic from wally world - has the same Initials -Spec's - I was there today and they were out of 5w 20 but had 5w 20 High Mileage - got me Thinking of trying the High Mileage.

 

Not really. The high mileage version has a different additive package that helps keep the seals and gaskets in the engine more pliable as it ages...same with other mobile 1 synthetic versions.

 

Don't confuse extended performance mobile 1 synthetic with high mileage. Extended performance is if you drive 25k miles a year between oil changes. High mileage is for older vehicles with more than 75k miles on the odo.

 

5k OCI 134K - Thanks.

 

10k oci here with 240k+ on the odometer. I notice that if I don’t use high mileage I lose more oil between oil changes.

 

"lose more oil between oil changes." Interesting - must be working !

 

Here on TW:
https://www.tacomaworld.com/threads/used-oil-analysis-reports-2nd-generation-tacoma.182294/

 

Thanks 4 the link - reading now !

 

sounds like they got to you

 

Hahahaha! Well, they must have got me too then. when I started running the high mileage synthetic on my older vehicles it significantly slowed the oil leaks so when I got my current Taco (2007) with 134,000 on it, I changed from the Mobil One Syn used by the previous owner to Mobil One High Mileage Syn.

 

Auto parts place across the street doesn't even carry conventional 5w-30, closest you can get is high mileage blend. I think the cost difference has gotten so low nobodys buying conventional anymore.

 

Mobil 1 makes so many different types now, it's getting ridiculous. The store I usually buy it from didn't have the 'advanced' synthetic last time, but had the synthetic. I asked the clerk what's the difference between synthetic and advanced synthetic? He said the label?

 

‘yeah, pretty much just the ink on the label