Anyone running Mobil One High Mileage Extended Performance?

[Rayyy]

Wondering if anyone has experience running Mobil One High Mileage or High Mileage Extended Performance.

My odometer is approaching 160k. I've been running regular 10w30, but replacing the 6th quart of oil with a quart of Lucas (100% petroleum), which helps a lot with quieting lifters at start-up and reducing oil consumption.

Considering bumping up to one of the two synthetic High Mileage formulas... Any experience? Anyone sticking to conventional oil?

Also, is there a consensus on which oil filter to use for higher mileage Vortecs?

 

[SnowDrifter]

I don't believe in high mileage oil

I also don't believe in conventional oil. Like... Why use something that's objectively worse?

And I *really* don't believe in additives. Lucas dilutes additives in the oil. It's just a thickener. Oh and it likes to make foam, which is no bueno in a hydraulic system like... Ya know... A sump.


170k on mine. Amsoil EAO64 / Fram XG3675. Castrol 0w40 euro spec. I change it anywhere from 2 to 5k, depending on how much idle time / short tripping / freeway driving I'm doing.

Not so much as a tick, click, knock, or wet spot on my engine.

 

[S33k3r]

I'm using AC Delco synthetic on all of mine. None of them currently have lifter ticks, the Suburban 2500 did have a slow leak before I got it; when it got bad, I had it resealed. The other vehicles are just fine.

 

[blueinkd]

I have used mobil1 high mileage 5w30 with a matching m1 oil filter. No issues here and my truck approaching 270k. I have owned it for 3 years. I drive it daily for work and seems fine. That's what's in it right now and for the last 4 changes. I usually change it every 7500 miles for peace of mind. It's been getting synthetic 5w30 since I have owned it. I was also using penzoil Plat full syn 5w30.

 

[bayareadude84]

This is my "oil stash" I change every 4000 miles and use what I flip a coin on

On a side note on my '01 work burban 5.3 with 345K miles I had a bad lifter/piston slap noise going on. I flushed oil with Berryman's oil flush, Changed oil pan gasket and then used Rotella Gas/Truck 5W30 and BINGO !!! No more engine noise!!! She's now quite as a new burban !!!





Oh and that Mobil 1 10W30 I got for $6 a jug cause of a Walmart.com price error hehe

 

[bayareadude84]

I have used mobil1 high mileage 5w30 with a matching m1 oil filter. No issues here and my truck approaching 270k. I have owned it for 3 years. I drive it daily for work and seems fine. That's what's in it right now and for the last 4 changes. I usually change it every 7500 miles for peace of mind. It's been getting synthetic 5w30 since I have owned it. I was also using penzoil Plat full syn 5w30.

Seen some tests and reviews those M1 filters are CRAP !! Most mechanics and professionals are using WIX or Fram ultra's

 

[blueinkd]

Seen some tests and reviews those M1 filters are CRAP !! Most mechanics and professionals are using WIX or Fram ultra's

That may be the case but in the 15+ years, multiple applications and various driving conditions not one issue.

 

[S33k3r]

So... Like, what are the symptoms of a poor filter? I'm not looking for obvious failure -- I'm looking for the subtle stuff. I was justing thinking that even a subpar filter would be fine if you change your oil often enough.

 

[89Suburban]

This is my "oil stash" I change every 4000 miles and use what I flip a coin on

On a side note on my '01 work burban 5.3 with 345K miles I had a bad lifter/piston slap noise going on. I flushed oil with Berryman's oil flush, Changed oil pan gasket and then used Rotella Gas/Truck 5W30 and BINGO !!! No more engine noise!!! She's now quite as a new burban !!!





Oh and that Mobil 1 10W30 I got for $6 a jug cause of a Walmart.com price error hehe

View attachment 359905
View attachment 359906

Holy moly.

 

[Rayyy]

So does "High Mileage" oil mean its for an engine with higher mileage on the odometer? Or does it just mean that the oil change interval is rated on more miles driven before the next oil change? (I always thought it was the former).

 

[corvette744]

So... Like, what are the symptoms of a poor filter? I'm not looking for obvious failure -- I'm looking for the subtle stuff. I was justing thinking that even a subpar filter would be fine if you change your oil often enough.

Hundreds of videos on you tube alot of interesting stuff

 

[ivin74]

Hundreds of videos on you tube alot of interesting stuff

I learned something new today, great video

 

[bayareadude84]

So... Like, what are the symptoms of a poor filter? I'm not looking for obvious failure -- I'm looking for the subtle stuff. I was justing thinking that even a subpar filter would be fine if you change your oil often enough.

You'll hear it small knock/clacking sound and your MPG will go down. Seems very common at 250K miles and higher. My 01 burban needed it at 325K miles cause the last moron owner was using Pennzoil "Diarrhea" conventional/Jiffy Lube service and was 12 months over due on a oil change. When I bought my burban in 2020 I flushed the old oil crap and started with Mobil 1 and then 1 lifter on pass side crapped out. flushed out again added some Hy-per lube and then Got some new LS7 lifters from Summit in Arlington and she was good as new again !!!

Dave

 

[bayareadude84]

Hundreds of videos on you tube alot of interesting stuff

Yes, those basic orange fram's are 100% crap but i have been running ultra's in ALL my trucks and police crown vic and NO issues ever. Many car pro's I know run the Fram ultra's !!


Dave

FRAM Ultra Synthetic Provides Ultimate Dirt Trapping Efficiency and Dirt-Holding Capacity.​

FRAM Ultra Synthetic helps get top performance from newer engines and maximum protection for older ones. The perfect filter choice for consumers looking to get the most from their investment in full synthetic oil.

 

[bayareadude84]

So does "High Mileage" oil mean its for an engine with higher mileage on the odometer? Or does it just mean that the oil change interval is rated on more miles driven before the next oil change? (I always thought it was the former).

It's marketed for vehicles with "HIGH miles" and not for you to drive longer between oil changes. Honestly, it's just some extra additives for the seals not to leak motor oil all over. IMO its not worth the extra cost as any regular name brand blend/full synthetic is good enough for these rigs

Hell I have ran Chevron Delo 400XLE 10W30 diesel oil in my burban with no issues !!! Its great SN+ oil and @ $3 a gallon pretty much "Free" in my book

Dave

 

[SnowDrifter]

Yes, those basic orange fram's are 100% crap but i have been running ultra's in ALL my trucks and police crown vic and NO issues ever. Many car pro's I know run the Fram ultra's !!


Dave

View attachment 359949

FRAM Ultra Synthetic Provides Ultimate Dirt Trapping Efficiency and Dirt-Holding Capacity.​

FRAM Ultra Synthetic helps get top performance from newer engines and maximum protection for older ones. The perfect filter choice for consumers looking to get the most from their investment in full synthetic oil.

View attachment 359950	View attachment 359951	View attachment 359952	View attachment 359953

Yep

FWIW, these actually have a bit better filtration performance than the Amsoil units. The consequence being they will be more apt to plug up if you're doing extended intervals. Extended being like... 15k if you're one of those crazy fools

 

[bayareadude84]

Yep

FWIW, these actually have a bit better filtration performance than the Amsoil units. The consequence being they will be more apt to plug up if you're doing extended intervals. Extended being like... 15k if you're one of those crazy fools
View attachment 359958

Ya 15K miles on a filter is plain stupid and asking to kill the motor with sludge. I do about (3) 3000-4000 mile OCI's and then replace with new


Dave

 

[SnowDrifter]

Some folks do it with lab tests

I'm not a believer though. Ive crawled under enough vehicles and had engines apart from people doing that stuff.... The paperwork says it's good. The engine disagrees

I've been known to change mine as soon as 1500 if I'm particularly rough on it.

Good synthetic oil is cheap. 4-5 bucks a quart? Meh, **** it.

 

[Glisella]

I bought my 08 Denali at 100K and have used Mobil 1 high mileage and AC Delco filter every 5K miles, sitting at 241K miles currently. No engine issues so I guess you could say I'm happy with it and it's performance. No metal on drain screw or anything like that. Oil comes out just dirty oil nothing else.

 

[gooffeyguy]

Ya 15K miles on a filter is plain stupid and asking to kill the motor with sludge. I do about (3) 3000-4000 mile OCI's and then replace with new


Dave

So you change your filter every 3 oil changes (9k-12k miles)?