Valvoline R&P 5W-30 - 3.8k mi; 2019 Kia Sorento V6 - 88k mi

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The first sample was M1 ESP 5W-30, and the second was HPL PCMO 5W-30 (2.9qt) + HPL PCMO 5W-40 (4 qt).

Looks like there is some dilution going on, but I don't know if that alone accounts for the drop in viscosity. The Product Information Sheet states that it is around 10.8cSt @ 100C.

I'm not sure what they mean by lube mixing. This was my second run of VR&P.

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2.6% fuel most likely brought viscosity down a bit but it's still not bad considering the 3.8k mileage on it as well. The fuel dilution estimate shows they have no idea what fuel is until GC test is done. You sticking with 40 grade?
 
I'm not sure what they mean by lube mixing. This was my second run of VR&P.
Yeah, I think that note from them was a misfire. The only flagged additive is Boron, and it is normal for it to decrease with miles. Virgin value is around 190 for this oil. The fuel dilution appears legit and I think the viscosity loss (~10%) is from the 2.6% fuel. The first two runs were not tested because the viscosity held, but I bet they were both greater than 1%. You can always request that they use GC regardless of viscosity if you want to know for sure.
 
The first sample was M1 ESP 5W-30, and the second was HPL PCMO 5W-30 (2.9qt) + HPL PCMO 5W-40 (4 qt).

Looks like there is some dilution going on, but I don't know if that alone accounts for the drop in viscosity. The Product Information Sheet states that it is around 10.8cSt @ 100C.

I'm not sure what they mean by lube mixing. This was my second run of VR&P.

View attachment 253945
Looks good. Low silicon. Vis seems a little high for a 30w. Maybe just a "regular" Valvoline 5w-30 would work. 4-5k oci.
 
You sticking with 40 grade?
The ESP seems to have held its viscosity well, but they didn't run a GC test to get fuel dilution.

My plan is to finish 4 OCI's with R&P (the wear metals look quite good), then try for an "extended" (i.e. ~5k mi for this engine) OCI with HPL 5W-30/5W-40 mix (I have 1 OCI worth of oil left), then more experimentations with HPL (e.g. No VII). Then I'll see where to go from there.
 
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The ESP seems to have held its viscosity well, but they didn't run a GC test to get fuel dilution.

My plan is to finish 4 OCI's with R&P (the wear metals look quite good), then try for an "extended" (i.e. ~5k mi for this engine) OCI with HPL 5W-30/5W-40 mix (I have 1 OCI worth of oil left), then more experimentations with HPL (e.g. No VII). Then I'll see where to go from there.
How is 5k miles for any engine an "extended" drain interval? Especially with something like HPL.

If it weren't for excessive oil consumption in my vehicles, I'd run HPL in them for 10-15k mile with confidence (but I'd sample to ensure it was safe) before concerning my self. That's 50-100% the "normal" OCI for my engine.
 
How is 5k miles for any engine an "extended" drain interval? Especially with something like HPL.
3750 is the Severe Service Mileage number for most Hyunkia products. So 5k would be considered extended service and if you read the terms for OCI lengths with Hyunkia products, most owners fall under Severe Service guidelines.

I normally run 3k OCIs (since 1970). I am doing extended OCIs and running both my Amsoil and HPL to approx 5k. I'm extending another 2k on my OCIs, for the first time in about 53 years.
 
If it weren't for excessive oil consumption in my vehicles, I'd run HPL in them for 10-15k mile with confidence (but I'd sample to ensure it was safe) before concerning my self. That's 50-100% the "normal" OCI for my engine.
The "normal" maintenance schedule is 7.5K mi. I've actually been thinking about this; I might extend to more than 5K given the good results I've seen from ESP and HPL (first two measurements in the report).
 
3750 is the Severe Service Mileage number for most Hyunkia products. So 5k would be considered extended service and if you read the terms for OCI lengths with Hyunkia products, most owners fall under Severe Service guidelines.

I normally run 3k OCIs (since 1970). I am doing extended OCIs and running both my Amsoil and HPL to approx 5k. I'm extending another 2k on my OCIs, for the first time in about 53 years.
Funny that following severe service with top notch oils still doesn't seem to halt or slow oil consumption for some people. I can't say for the Sportage we have because it was pre-owned by 2 people for the first 98k miles but my Sonata never saw an OCI over 5k (was doing every 4k with that one), TopTier fuel, QSUD 5W30, still burned a qt every 500 miles for tens of thousands miles. 🤷

It wasn't the OCI, in my humble opinion, based on my experiences alone with "hyunkia"
 
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