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What’s going on with Quaker State Ultimate Protection?
- Thread starter Klutch9
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Ok here we go, 2025 PDS, 9.0
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GTX is not their flagship so I don't know if that 9.0 is worth it
I compared what you are showing me here to mine and all I can find is the vis. # we are looking at and also, yours says 0w-20 SP and mine just says 0w-20 without the SP Evidently the SP is thinner for some reason. Are you in the USA?
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Check comment #44
Well, I don't know, but their Edge products are both thinner, and I want the thicker, possibly making it a little quieter and seem a little smoother. I am only going to do 3000-4000 mile or 6-month oic anyhow.
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How do I check comment 44, how do I find it? I am new at the Bitog thing.
I figured it out.
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Sad thing is, I was serious, but I figured it out even before you sent me the picture! LOL!
Do you know what the initials stand for jcp?
Figured it out, the api ratings.
Carlostrece
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Castrol GTX is a syn blend. If you want to compare datasheets claims for cSt to other oils mentioned in this thread, Castrol Edge is a full syn and therefore a relevant comparison.
Tested cSt IRL VOA is another matter since test results with most brands differ from datasheet claims.
I'm personally most familiar with 5w30 & 10w30 oils. I compared all the full syn and blend oils in those grades that are readily available in USA. Especially the HM ones. I looked at datasheet claims and VOAs (all by one lab - Oil Analyzers).
Edge HM 5w30 is thinner than several other good HM choices. However, Edge HM 10w30 looks really good because I like its cSt. So Castrol Edge HM has great cSt if I go up a grade from 5w30 to 10w30.
Edge HM 10w30 cSt has approx same cSt as Quaker State HM FS 5w30. I could be happy using either of those oils in my 97 Buick, but Edge HM costs $5 more.
Valvoline EP HM 5w30 is another good oil with almost as high cSt, but costs $9 more .
Amsoil HM 5w30 is another good oil with similar cSt, but costs $20 more.
Of all those FS oils I just mentioned, Amsoil has the highest cSt at KV100, followed closely by QS HM FS, which is then closely followed by the other two.
That's pretty much it for brands of oil with good cSt @ KV100. At least without going to Euro oils. It's defineately it for brands of HM FS oil.
Those brands of HM FS oils have good cSt and I'd be happy using any of those, but QS HM is by far the most affordable of the excellent HM FS oils that have good cSt.
Then look at QS FS (non HM). Same excellent cSt, but without the extra seal conditioner. Then look at QS UP FS and it has even higher cSt. QS UP FS has highest cSt of any non Euro full syn AFAIK. I'm referring to IRL tested VOA cSt @ KV100.
QS oils not only show high cSt in their data sheets, but also test showing higher cSt than claimed in the data sheets. What other oil does that?
Then consider the $20 (or less) per 5 qt jug price at Walmart for QS FS oils. In the case of QS UP FS also consider it claims to be a 20K mile oil.
Does it live up to it's 20K mile claim? I don't know. Maybe. I do know that in VOAs it exceeds its data sheet viscosity claims, which you can't say about any other brand that I know of. I think it's one of life's rare bargains. Just like Walmart car batteries have been cheaper and superior to most others.
It's a $20 a jug oil that competes with $30 & $40 a jug oils. It's debatable whether you can find a better non Euro oil. I think not. What is not debatable IMO is that QS UP FS is a bargain. You won't find a better bargain, IMO. Same with QS HM FS.
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Carlostrece
$100 Site Donor 2025
P.S. - I'm not even using QS oil yet. I'm happily using Maxlife Blend. However, now that my oil leaks are gone, next time I want to use a HM FS oil.
In order from highest cSt to lowest cSt @ KV100 based on VOA tests by Oil Analyzers... I could be very happy using any of these:
Amsoil HM 5w30 (excellent/highest cSt, but $40 a jug, haven't seen on sale)
Castrol Edge HM 10w30 (excellent cSt, $27.48 a jug, often $24 on sale)
Quaker State HM FS 5w30 (excellent cSt, $23 a jug, often $20 on sale)
Valvoline EP HM (FS) 5w30 (excellent cSt, $29 a jug, haven't seen on sale)
Those ^ 4 oils have higher cSt @ KV100 than any other 5w30 HM FS oils on the market AFAIK. I compared all brands of HM full syn and blend oils data sheets and all VOAs by Oil Analyzers.
My point is that after researching every brand of HM oils for weeks. Those ^ are the best/thickest (at KV100 op temp) HM full syn options that I could find. One of my criteria was the cSt at KV100 had to be high, but within grade. Edge 10w30 fits right in with the 3 best 5w30 brands. Edge 5w30 is too thin for my preferences, but Edge 10w30 is dandy.
Of the best/thickest FS HM oils I found, Quaker State HM FS is a bargain price. Castrol Edge HM is also a bargain.
Then consider QS UP FS. It's not a HM oil. It's an extended OCI oil. QS UP FS is thicker than all the HM FS oils I mentioned. QS UP FS is the thickest (per grade) FS (non Euro) oil that I know of. It's KV100 viscosity is right up where an oil cSt should/would be without EPA meddling. Hopefully it stays that way.
In order from highest cSt to lowest cSt @ KV100 based on VOA tests by Oil Analyzers... I could be very happy using any of these:
Amsoil HM 5w30 (excellent/highest cSt, but $40 a jug, haven't seen on sale)
Castrol Edge HM 10w30 (excellent cSt, $27.48 a jug, often $24 on sale)
Quaker State HM FS 5w30 (excellent cSt, $23 a jug, often $20 on sale)
Valvoline EP HM (FS) 5w30 (excellent cSt, $29 a jug, haven't seen on sale)
Those ^ 4 oils have higher cSt @ KV100 than any other 5w30 HM FS oils on the market AFAIK. I compared all brands of HM full syn and blend oils data sheets and all VOAs by Oil Analyzers.
My point is that after researching every brand of HM oils for weeks. Those ^ are the best/thickest (at KV100 op temp) HM full syn options that I could find. One of my criteria was the cSt at KV100 had to be high, but within grade. Edge 10w30 fits right in with the 3 best 5w30 brands. Edge 5w30 is too thin for my preferences, but Edge 10w30 is dandy.
Of the best/thickest FS HM oils I found, Quaker State HM FS is a bargain price. Castrol Edge HM is also a bargain.
Then consider QS UP FS. It's not a HM oil. It's an extended OCI oil. QS UP FS is thicker than all the HM FS oils I mentioned. QS UP FS is the thickest (per grade) FS (non Euro) oil that I know of. It's KV100 viscosity is right up where an oil cSt should/would be without EPA meddling. Hopefully it stays that way.
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Carlostrece
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I just tried to download data sheet for Mobil 1 HM 10w30. The link is broken. I downloaded the M1 HM 5w30 data sheet 2 weeks ago, but now that link is broken too (as well as other grades data sheets links).
QS isn't the only oil company with website management problems. Mobil's website is having same issue, at least with all M1 HM viscosities.
I didn't check the rest of M1 website.
QS isn't the only oil company with website management problems. Mobil's website is having same issue, at least with all M1 HM viscosities.
I didn't check the rest of M1 website.
There are 4 Castrol GTX engine oils in the USA. The The Castrol GTX Full Synthetic is the top GTX oil in the USA. It is not a synthetic blend. It is their 10,000 oci full synthetic oil, this is according to Castrol USA. Next up are the black bottles, there are three versions of that Edge oil, then the last is Their Gold Bottle Extended Performance oil. This information is according to Castrol USA Thursday, 2 days ago. Maybe they are lying to me and the entire world, but there is nothing on the bottle I have or on their website about this particular silver bottle Castrol being a synthetic blend. According to Castrol it is a "full synthetic" oil. It is their 10,000 mile full synthetic GTX.
Carlostrece
$100 Site Donor 2025
I think you're correct. I thought GTX is blend. Maybe I just assumed that after seeing cold temp flow tests in which GTX was one of the oils tested. I was wrong with regard to at least some grades being blend. Maybe I was wrong about all grades of GTX. I'm not sure.
What I am sure of is that in cold oil flow tests I've seen, GTX did not flow well compared to other brands. In fact, it was dead last. Edge is a better oil. I could be happy using Edge.
I am not saying it is the greatest full synthetic there is out there, as a matter of fact it is the bottom of the barrel of the Castrol full synthetic oils they sell here in the US. All I am saying is, for a 0w-20, not 0w-30, but 0w-20, it has a decent vis at 100c of 9.0. For a cheap full synthetic 0w-20, that is thicker than many other 0w-20 oils out there. I didn't say it would flow, I said it was a little thicker than some of the other full synthetics. I hope we have this figured out. Believe me, I know it is not an Amsoil, Redline, Castrol Extended Performance or a Mobil 1 EP. For a 10,000-mile rated cheaper synthetic oil, it is a pretty thick 0w-20, if that is what you are looking for.
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