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#4525961 - 09/25/17 04:19 PM Should I be running high mileage oil?
apollo18 Offline

Registered: 09/23/17
Posts: 27
Loc: canada
hey guys! i know this has been discussed a million times, but never know what if our gm engines LOVE a specific type of oil.

So my truck is an 2007 escalade with a l92 vortec 6200 6.2L, on the original engine with 330,000 km's on it.

In the past it was always on Mobil 1 synthetic from the dealership, at 290k i started using amsoil for a couple changes, then royal purple for a couple, and now ive been running pennzoil ultra platinum. I heard the ultra platinum had the best protection from forums and stuff. There was some psi protection thing and Ultra Platinum had the best protection; The main problem with my engine is noisy lifters so im hoping an oil could silence that maybe, also winter is coming soon and temperatures could hit -35 celcius. I am going to be getting my oil changed soon, and i wanna try castrol edge extended performance since i havent tried it in this engine yet. With all the oils, I felt that the lifter noise was the same so maybe that will never get fixed but whatever. I guess i want the best oil for the cold winter coming up soon. Also I barely ever do any highway miles tho. its basically 90 percent driven short distances which is worse.

So since I haven't tried Castrol yet, I want to try the CASTROL EDGE EXTENDED PERFORMANCE but since my engine has alot of kilometers on it, i see they have a high mileage oil as well. CASTROL EDGE HIGH MILEAGE. Should I be running the high mileagle or it doesnt matter? ive never ran a high mileage oil before but i heard that they are usually of lower quality

#4525970 - 09/25/17 04:39 PM Re: Should I be running high mileage oil? [Re: apollo18]
Kuato Offline

Registered: 10/23/05
Posts: 7094
Loc: Colorado
If it is not leaking there is no need for a high mileage oil, IMO.
Thick vs Thin test: 15k / 43k miles complete

#4525974 - 09/25/17 04:47 PM Re: Should I be running high mileage oil? [Re: apollo18]
apollo18 Offline

Registered: 09/23/17
Posts: 27
Loc: canada
yeah its not! its never burned oil in its life. only time it did was with Royal Purple XPR but that stuff is meant for racing and stuff lol.

#4526003 - 09/25/17 05:14 PM Re: Should I be running high mileage oil? [Re: apollo18]
slacktide_bitog Online   content

Registered: 03/20/08
Posts: 6174
Loc: USA

Any good 5w30 will be fine for the OCI suggested by your OLM smile

#4526004 - 09/25/17 05:15 PM Re: Should I be running high mileage oil? [Re: apollo18]
PimTac Online   content

Registered: 03/04/17
Posts: 4313
Loc: Soviet State of Washington
Why not go back to Mobil1? It seems all your issues started when you began to use other brands.
2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter

#4526016 - 09/25/17 05:25 PM Re: Should I be running high mileage oil? [Re: apollo18]
HerrStig Offline

Registered: 08/24/11
Posts: 9560
Loc: Boston, MA
No oil I know of will fix a worn engine.

#4526027 - 09/25/17 05:29 PM Re: Should I be running high mileage oil? [Re: apollo18]
Donald Offline

Registered: 03/21/04
Posts: 20461
Loc: Upstate NY
Use HM oil only when your rear main seal leaks. For other leaks fix the seal/gasket.

Go back to Mobil 1. If it still has lifter noise, turn up radio or replace the lifters, maybe they are worn. You engine will not last forever with only oil changes. It needs some maint at this mileage.
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)

#4526054 - 09/25/17 06:05 PM Re: Should I be running high mileage oil? [Re: apollo18]
Spector Offline

Registered: 06/10/02
Posts: 3461
Loc: Chattanooga, TN
Agree, if no consumption there is no need for HM oil. In Canada, for the winter, I would personally run a 0W20 or 0W30 oil for those cold starts.

#4526088 - 09/25/17 06:42 PM Re: Should I be running high mileage oil? [Re: apollo18]
CT8 Offline

Registered: 10/09/14
Posts: 10989
Loc: Idaho
Try a 0W-40.
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

#4526117 - 09/25/17 07:20 PM Re: Should I be running high mileage oil? [Re: apollo18]
oil_film_movies Offline

Registered: 06/13/16
Posts: 2569
Loc: MN
High Mileage oil will deliver more seal conditioners to old seals. Its preventative. Its to keep future leaks from developing. .... Old is old. A little extra seal conditioner could help, and won't hurt. It won't swell them out of shape since the oil makers know the difference between conditioning brittle old seals vs. swelling them. All the SN or dexos1 seal swelling tests still pass just fine, so its conditioning that happens.

#4526127 - 09/25/17 07:25 PM Re: Should I be running high mileage oil? [Re: apollo18]
Nick1994 Online   content

Registered: 02/19/13
Posts: 10117
Loc: Phoenix, AZ
No need for HM oil.

-35? Buy Mobil 1 0w30. I'll even be running it here in the desert, because I bought it on clearance.
2015 Hyundai Sonata 2.4L 79k PU 5w30 & OEM
2000 Toyota Camry 2.2L 228k M1 AFE 0w30 & Wix
1996 Jeep Cherokee 4.0L 146k M1 HM 10w40 & Fram Ultra

#4526165 - 09/25/17 08:11 PM Re: Should I be running high mileage oil? [Re: apollo18]
GMBoy Offline

Registered: 11/22/04
Posts: 7703
Loc: Texas
I agree with keeping your original Mobil 1 diet. With that, it won't hurt to go Mobil 1 High Mileage. It has a litte more detergents as well as a little seal conditioner (not a seal sweller) and that's a good thing. My vote is Mobil 1 High Mileage either 5w/30 or 10w/30.

#4526194 - 09/25/17 08:47 PM Re: Should I be running high mileage oil? [Re: apollo18]
danez_yoda Offline

Registered: 07/18/09
Posts: 464
Loc: texas
original spec is 5w30. you might try a thicker oil like 0W-40 to see if that quiets things down a little. Tolerances are looser now so a thicker oil will build a thicker film and maybe make less noise.

I've seen it over and over. Want a quick try without committing to a full OCI, at the end of an OCI, try STP and see if the engine noise gets lower. STP only thickens the oil no magic.

#4526286 - 09/25/17 11:03 PM Re: Should I be running high mileage oil? [Re: apollo18]
JFAllen Offline

Registered: 07/31/16
Posts: 155
Loc: Albury, NSW
High mileage oils have never really gained much traction in the Australian market place, in fact, outside of valvoline, I'm not sure anyone actually markets one here at all? As others have stated, if it's getting a little noisier, a step up to a 40 or even 50W oil can help pick up the slack.

And as others have mentioned, if a seal / gasket is leaking. simply replace it if you can. That's always the best course of action.


#4526324 - 09/26/17 01:03 AM Re: Should I be running high mileage oil? [Re: apollo18]
LeakySeals Offline

Registered: 02/18/11
Posts: 6578
Loc: Hudson, NH
Check your exhaust manifold bolts. Make sure they are all still there.
06 Escalade 6.0L AWD 160k. M1 5w30 Fram TG
03 Maxima 3.5L 149k ST HM 10w30

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