Pennzoil platinum euro 5w40 HTHS

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46
Location
Canada
Hey guys,

I was wondering if you guys knew if the HTHS rating for pennzoil platnium euro has changed over the years, I know back in 2016 quattro pete said the HTHS was 3.6, but today I got an email back from pennzoil regarding the HTHS number and this is what they said:
"The typical High Temperature High Shear Viscosity (ASTM D4683 or D5481 or D4741) for Pennzoil Platinum Euro 5W-40 is 3.8 mPa-s @ 150°C"

So it seems that the HTHS number went up, if anyone has any insight on this that would be great!
 
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4,630
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Decatur AL USA
I'm pretty sure it's been reformulated with the transition to GTL. 3.8 is more typical of a 0W-40 PCMO today. I would suspect the info you were given was correct.
 

lowon

Thread starter
Messages
46
Location
Canada
I'm pretty sure it's been reformulated with the transition to GTL. 3.8 is more typical of a 0W-40 PCMO today. I would suspect the info you were given was correct.
I really hope so because that would be awesome if it was. But back in in 2016 the HTHS rating was 3.6 and think it was also GTL back then as well and I am unaware of any reformulations so that's why I have some slight suspicions.
 

lowon

Thread starter
Messages
46
Location
Canada
I really hope so because that would be awesome if it was. But back in in 2016 the HTHS rating was 3.6 and think it was also GTL back then as well and I am unaware of any reformulations so that's why I have some slight suspicions.
Never mind I lied, I found a bunch of threads about it being reformulated to SN+ specs in 2019.

So likely those 2016 numbers were inaccurate for today's specs.
 
Got it in my stash. :)

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lowon

Thread starter
Messages
46
Location
Canada
Yeah Pennzoil is pretty thin for a 5w40, but if it really is 3.8 then the base stock is robust as hell.
 
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12,584
Location
Colorado Springs
I'm pretty sure it's been reformulated with the transition to GTL. 3.8 is more typical of a 0W-40 PCMO today. I would suspect the info you were given was correct.
Not really.
HTHS of 0W40 is more between 3.6 and 3.7
Mobil1 0W40: 3.6
Catsrol 0W40: 3.7
Ravenol 0W40: 3.7
Valvoline 0W40: 3.7
 
Messages
12,584
Location
Colorado Springs
Hey guys,

I was wondering if you guys knew if the HTHS rating for pennzoil platnium euro has changed over the years, I know back in 2016 quattro pete said the HTHS was 3.6, but today I got an email back from pennzoil regarding the HTHS number and this is what they said:

So it seems that the HTHS number went up, if anyone has any insight on this that would be great!
Could be. First GTL version that showed up was Pennzoil Ultra PurePlus with HTHS of 3.88.
Also, take into consideration that Pennzoil Platinum is reformulated in May 2020 for API SP.
 

lowon

Thread starter
Messages
46
Location
Canada
I hope pennzoil's HTHS rating can stay consistent at 3.8 and not keep dropping and increasing with every reformulation. It sucks because they don't post any of this so it is hard to keep track.
 
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