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#4560241 - 10/31/17 01:30 PM Castrol GTX High Mileage 10w-30
CamBurt33 Offline


Registered: 10/22/17
Posts: 3
Loc: Dayton, TN
Just curious. What is everyone's opinion on Castrol GTX High Mileage? I'm going to run it in my 1994 Ranger 4.0 and looking to see what kind of experience people have had with it. Will it really condition seals and prevent/stop oil leaks? If not, is there a HM oil that will do this?

Thanks!


Edited by CamBurt33 (10/31/17 01:43 PM)

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#4560245 - 10/31/17 01:39 PM Re: Castro GTX High Mileage 10w-30 [Re: CamBurt33]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
HM oil has a special 'lotion' for rubber seals to keep them from drying out.

When they dry out, they shrink. When they shrink, you get leaks.

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#4560253 - 10/31/17 01:49 PM Re: Castro GTX High Mileage 10w-30 [Re: CamBurt33]
HoosierJeeper Offline


Registered: 11/23/16
Posts: 1276
Loc: WI
I ran it in my Liberty for 2 OCIs I think (maybe a third, don't remember). It's an oil leaker. I've also ran Maxlife in it. With the Castrol, the oil level wouldn't move for about 1000 miles into the OCI, then it would leak again. Maxlife I'm not even sure it's doing anything, so Castrol in my experience wins against Maxlife.

In my 96 Cherokee, I ran Maxlife in it when I got it and still got oil drips after a few changes. Started running Pennzoil HM in it and the drips stopped, at least enough to not hit the ground. I probably have to add about a quart every 2-3k for it, which I'm happy with.

One that I don't know about is Quaker State Defy. I'm guessing as a SOPUS oil it's like Pennzoil HM but I don't know.
_________________________
15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)

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#4560263 - 10/31/17 02:12 PM Re: Castrol GTX High Mileage 10w-30 [Re: CamBurt33]
Bgallagher Offline


Registered: 04/17/12
Posts: 3159
Loc: Boston, MA
it will help bur short of fixing the issue you might never "fix" a leak with oil. It will help though.
_________________________
2017 Chevy Traverse - 28k - Delco Dexos 1 and PF63
2014 Chevy Equinox - 22k - Delco Dexos 1 and PF457G
2015 GMC Terrain - 22k- Delco Dexos 1 and PF457G

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#4560535 - 10/31/17 06:58 PM Re: Castrol GTX High Mileage 10w-30 [Re: CamBurt33]
KCJeep Offline


Registered: 06/30/11
Posts: 6999
Loc: Mahzurrah!
It's good oil. I have run a lot of it and am still running it ( 3 years exclusively now ) in my son's 04 Concorde. It is still on the "thick for grade" like I prefer. Pennzoil HM is also very good and is also thick for grade.
_________________________
09 Lincoln MKZ AWD 91k - M1 AFE 0w30
12 KIA Sedona 86k - Edge 0w40
09 Ford Focus 129k - GTX UltraClean 5w30
00 Chevy Lumina 195k - Supertech FS HM 5w30
04 Jeep Grand Cherokee gone but not forgotten...

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