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scott 61 · 05-28-2019, 08:24 AM

I have a 08 Holiday Rambler endeavor with a ISL 400 checked the sca level it read 1.9 how much dca4 should I add thank you

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palehorse89 · 05-28-2019, 08:30 AM

Looks like a 1.9 reading to me in the green zone by your pictures...

8.3Oilbuner · 05-28-2019, 11:19 AM

Good morning Scott61 from up here in Wa. state. I could go into a semi long post on how much DCA to add. I printed out a page from dieselmanor.com and they have an example on the page on how to achieve the proper SCA level. The example is for a Ford Power Stroke engine, but the principle is the same. They show the formula for figuring how much DCA to add to the system. Just added some to my 01 Windsor to bring it up to the 2.2 level. Hope this info helps! When you get to their web site, on the left side click on cooling. This take you to a page with cooling additive products. Click on the 16 oz. bottle of DCA 4 and that will take you to the page I mentioned above.

Windecker · 05-28-2019, 02:59 PM

Well we have to be careful, not all computers show the colors the same but from what I see, looks like your right where you should be. Looks like 1.9 is in the middle of the green and -30 degrees.
In the white lower left would be to add your DCA4 and upper right would be test of the system. I have never had one test out of the green so not sure what "test" actually means.
If this is in error, I sure would like to know!
Windecker

153stars · 05-30-2019, 08:43 AM

Not to hijack your thread..
I took my pics against the appropriate scales. Because I never did it before. The sale sticker was right in the middle of the directions. I was able to make out the time for readings. I was in the green "happy to find" so I just put on the spare dosage filter.
Shook old one it did filter out debris. I had read its not a real filter.
It looks a little light on molybate ....are all additives the same dca additive the same percentage. Or does moly break down faster than nitrate.

153stars · 05-30-2019, 09:04 AM

http://dieselmanor.com/fleetguard/DCA60L.htm
Shared the simplified view of above suggestion...I guess simplified view didn't come through

153stars · 05-30-2019, 09:22 AM

https://www.google.com/url?sa=t&sour...NJCYKHCRTLCzRk
Ok dca2 has no molybate
No color change on strip.
Dca4 has molybate.
I tried to read up Before I did mine .Then you just have to do it and see what's up mine must of had DCA4 or coolant with molybate. in it.
I looked for an exel spreadsheet to plug in capacity vs tested level
Didn't find one.