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#4496333 - 08/23/17 06:24 PM High Na levels but no K?? Rotella T6 + Zerex G-05
Covert24 Offline


Registered: 02/13/11
Posts: 27
Loc: Raleigh, North Carolina USA
Have been running UOA's for the best few oil changes on my "new-to-me" 04 Volvo S60 2.5T. The very first UOA was when i bought the car and immediately changed the oil. The next two are using Valvoline SynPower 5w-30 with Maxlife and the most recent two including the most recent are using Rotella T6 5w-40 Full syn. Wear metals are all in good shape despite my bigger turbo, injectors, and a Stage 3 tune from Hilton. However, my Sodium levels have been fairly high on all analysis' minus the very first one as they had just changed the oil before i bought it. With the absence of Potassium, I was originally thinking the sodium may have just been part of the add pack however reading up on the coolant I use in this (Zerex G-05), I found that this coolant has a high Sodium content and only around 10ppm of potassium. Does anyone think that these analysis's may actually be showing signs of a internal coolant leak instead of just add pack from the oil? Blackstone mentioned that this oil does not use Sodium in this oil however that conflicts with a few random articles i could find on the subject.


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#4496350 - 08/23/17 06:44 PM Re: High Na levels but no K?? Rotella T6 + Zerex G-05 [Re: Covert24]
car51 Online   content


Registered: 03/12/15
Posts: 10532
Loc: Southwest PA
Additive package from valvoline washing out
_________________________
2009 Toyota Camry LE

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#4496363 - 08/23/17 06:54 PM Re: High Na levels but no K?? Rotella T6 + Zerex G-05 [Re: car51]
Covert24 Offline


Registered: 02/13/11
Posts: 27
Loc: Raleigh, North Carolina USA
Originally Posted By: car51
Additive package from valvoline washing out


That's what I'm hoping for. I suppose the third UOA with the T6 will be the deciding factor. I still find it hard to believe that after 2 oil changes after using the Valvoline, that the sodium would still be as high as it is, though.

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#4496389 - 08/23/17 07:24 PM Re: High Na levels but no K?? Rotella T6 + Zerex G-05 [Re: car51]
2015_PSD Offline


Registered: 09/26/10
Posts: 7484
Loc: SE Texas
Originally Posted By: car51
Additive package from valvoline washing out
+1 - it takes a while. I experienced the same when switching from MS5K to M1 AFE.
_________________________
2018 MB AMG GLC43 3.0L Coupe - Castrol 0W-40/Purflux
2018 MB C300 2.0L - M1 0W-40/OEM
2015 F-250 6.7L PS Diesel - Delo 15W-40/CQ Blue
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