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Mystik JT8 15w40Mystik in Ram EcoDiesel #4800608
06/29/18 12:52 PM
06/29/18 12:52 PM
Joined: May 2015
Posts: 651
California
SavagePatch Offline OP
SavagePatch  Offline OP
Joined: May 2015
Posts: 651
California
I just purchased three 2 gallon jugs of Mystik JT8 15w40 for $43 shipped. Going to use it in my 2015 Ram EcoDiesel next oil changed after our 4th of July camping trip. I'll run it my usual 5k interval (manual says 10k) and get a UOA done. Capacity os 10.5wts so this will get me two OC with a lottle extra for topping off. It'll have a few trips towing our Jay Flight Baja on it too. So far I've ran 5w30, 0w40, and 5w40. I'm wondering if the HTHS 4.3 will show any better wear but my main intent was a low cost oil change that should give the same results as a 5w40 synthetic.




Re: Mystik JT8 15w40Mystik in Ram EcoDiesel [Re: SavagePatch] #4800660
06/29/18 01:40 PM
06/29/18 01:40 PM
Joined: Feb 2015
Posts: 713
Sask, Canada
BrianF Offline
BrianF  Offline
Joined: Feb 2015
Posts: 713
Sask, Canada
Should be a decen toil. I believe Mystik is rebadged Citgo.


2006 Trailblazer LT. Castrol Edge with Fram Ultra.
2017 Ram 3500 SLT Megacab. Duron SHP 10w30 with Hastings LF608.
1993 GMC 1500. It has oil and still runs
Re: Mystik JT8 15w40Mystik in Ram EcoDiesel [Re: SavagePatch] #4800664
06/29/18 01:49 PM
06/29/18 01:49 PM
Joined: Oct 2014
Posts: 11,864
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,864
Idaho
Unless it is freezing at startup. I would guess the 15w-40 will be as good or better than the 5W-40. But then I could be wrong.


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: Mystik JT8 15w40Mystik in Ram EcoDiesel [Re: SavagePatch] #4800672
06/29/18 01:57 PM
06/29/18 01:57 PM
Joined: May 2015
Posts: 651
California
SavagePatch Offline OP
SavagePatch  Offline OP
Joined: May 2015
Posts: 651
California
Btw... I had to call to get the HTHS viscosity (4.3) since it wasn't on the PDS which they readily provided but when I asked the ratio of Synthetic to Conventional in this bleand they told me that it was proprietary.

Re: Mystik JT8 15w40Mystik in Ram EcoDiesel [Re: SavagePatch] #4801634
06/30/18 05:20 PM
06/30/18 05:20 PM
Joined: Sep 2015
Posts: 5,873
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,873
Kalifornia Kollective
In Cali unless you live in Susanville or Truckee (or similar high altitude) in winter you do not need a 5W for anything...

Folks been firing off cold on 15W-40 for about 40 years now. Works fine and is good protection.

JT8 is nice oil. Got a couple of jugs left (from clearance sale) and I use it where ever it'll work smile


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Mystik JT8 15w40Mystik in Ram EcoDiesel [Re: SavagePatch] #4801740
06/30/18 08:12 PM
06/30/18 08:12 PM
Joined: Feb 2015
Posts: 713
Sask, Canada
BrianF Offline
BrianF  Offline
Joined: Feb 2015
Posts: 713
Sask, Canada
Ya don't over think the 15w40 conventional. Many, many people use it year round up here with no ill effects. If it gets cold, plug the vehicle in.


2006 Trailblazer LT. Castrol Edge with Fram Ultra.
2017 Ram 3500 SLT Megacab. Duron SHP 10w30 with Hastings LF608.
1993 GMC 1500. It has oil and still runs
Re: Mystik JT8 15w40Mystik in Ram EcoDiesel [Re: SavagePatch] #4813508
07/13/18 08:47 PM
07/13/18 08:47 PM
Joined: May 2015
Posts: 651
California
SavagePatch Offline OP
SavagePatch  Offline OP
Joined: May 2015
Posts: 651
California
So I ended up only receiving one 2 gallon jug of JT-8. I asked to return it and they said to keep it and they would refund my money since the listing was incorrect. Good customer service.

So then I only had 8qts out of my needed 10.5qts. I still wanted to do a run to compare so I bought a one gallon jug from O'Reilly. I filled my EcoDiesel with a blend of 8qts CK-4 JT-8 and 2.5qts CJ-4 JT-8 with a little left to top up with.

I'll do a UOA in 5k miles. In the meantime I sent off my sample of M1 TDT 5w40 to be analyzed. I'll post the results when I get thwm.


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