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Castrol GTX High Mileage 10w-30 #4560241
10/31/17 01:30 PM
10/31/17 01:30 PM
Joined: Oct 2017
Posts: 3
Dayton, TN
CamBurt33 Offline OP
CamBurt33  Offline OP
Joined: Oct 2017
Posts: 3
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!

Last edited by CamBurt33; 10/31/17 01:43 PM.
Re: Castro GTX High Mileage 10w-30 [Re: CamBurt33] #4560245
10/31/17 01:39 PM
10/31/17 01:39 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
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.

Re: Castro GTX High Mileage 10w-30 [Re: CamBurt33] #4560253
10/31/17 01:49 PM
10/31/17 01:49 PM
Joined: Nov 2016
Posts: 1,278
WI
HoosierJeeper Offline
HoosierJeeper  Offline
Joined: Nov 2016
Posts: 1,278
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)
Re: Castrol GTX High Mileage 10w-30 [Re: CamBurt33] #4560263
10/31/17 02:12 PM
10/31/17 02:12 PM
Joined: Apr 2012
Posts: 3,159
Boston, MA
Bgallagher Offline
Bgallagher  Offline
Joined: Apr 2012
Posts: 3,159
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
Re: Castrol GTX High Mileage 10w-30 [Re: CamBurt33] #4560535
10/31/17 06:58 PM
10/31/17 06:58 PM
Joined: Jun 2011
Posts: 7,060
Mahzurrah!
KCJeep Offline
KCJeep  Offline
Joined: Jun 2011
Posts: 7,060
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 97k - M1 AFE 0w30
12 KIA Sedona 91k - PP HM 10w30
09 Ford Focus 131k - Supertech FS HM 5w30
00 Chev Lumina 201k - Supertech FS HM 5w30
04 Jeep Grand Cherokee gone but not forgotten.

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