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Amsoil.28%-37%I believe redline S1 is more potent by using 1 or 2 bottles per tank. Some people online is using 1/3 of a bottle per tank but it doesn’t do much in term of clean carbon buildup.
FYI: see photos

Amsoil's pi SDS is 25<50 Alcohols, C12-15 Propoxylated, Aminated which is PEA.I wish that I could still see tiny characters like that, but those days are long gone.
What is the definition of the expression 20 - <40?
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https://safetydatasheets.phillips66.com/Webviewer/DirectSearchResult/Result?product-id=830019#
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For you RAM HEMI try 2 bottles of S1. I had tried 2 bottles on my 19 gallon tank and stop doing that because i think i was wasting S1. For now i am sticking with 1 bottle per empty tank. I am going to order a case of 12 pack from Bulk55 soon.
That is pricey. Look at GBP, they sell SI-1 for $18.I've been using a single bottle every spring for a few years with 91 Octane. Si-1 sells for about $28 up here and is rarely available on sale.
My butt dyno finds this extremely productive. I have yet to scope the results.
My truck feels like a rocket every spring and I get hooked on using 91 for a while.
With the horrendous gas prices this year, I stretched out the process a bit longer.
I ran the tank down to about 5 gallons, add a single bottle of Si-1, run that down to fumes, and add another 5 gallons.
I repeat this 5 gallon addition and run the tank down several times. Then fill with 91.
I'm planning for an OCI next week.
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That is pricey. Look at GBP, they sell SI-1 for $18.

As mentioned previously on this thread bulk55 sells S1 a lot cheaper however, they only sell a case of 12 packs plus $24 shipping. $155/12=$12.92 (included shipping)Yes, they have a great price, but their shipping charge kills the deal for me.
If I buy a 3-year supply (3 jugs), the shipping charge is $18.
Net savings over paying full price at Amazon.ca is about $4/year, but I have to invest in a 3-year supply.
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I use 1 jug of Si-1/year.
I've bought it on sale at Amazon.ca once in a while.
Once from a store in Ogdensburg, NY, but usually pay full price from Amazon.ca, which includes free shipping.
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Which store over there has it?Yes, they have a great price, but their shipping charge kills the deal for me.
If I buy a 3-year supply (3 jugs), the shipping charge is $18.
Net savings over paying full price at Amazon.ca is about $4/year, but I have to invest in a 3-year supply.
View attachment 586482
I use 1 jug of Si-1/year.
I've bought it on sale at Amazon.ca once in a while.
Once from a store in Ogdensburg, NY, but usually pay full price from Amazon.ca, which includes free shipping.
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Is this a US store or also Canadian?As mentioned previously on this thread bulk55 sells S1 a lot cheaper however, they only sell a case of 12 packs plus $24 shipping. $155/12=$12.92 (included shipping)
As mentioned previously on this thread bulk55 sells S1 a lot cheaper however, they only sell a case of 12 packs plus $24 shipping. $155/12=$12.92 (included shipping)
Which store over there has it?