Diesel Engines and Anti-freeze

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Joined
Sep 21, 2020
Messages
307
Location
Ringgold, GA.
RV Year
2006
RV Make
Holiday Rambler
RV Model
Ambassador
RV Length
40'
TOW/TOAD
2019 Jeep Grand Cherokee
How many of you check the PH levels of your anti-freeze? I've seen engines in the shop at the heavy truck dealership I used to work for where the PH had gotten off in the coolant and had pitted the bore liners so bad it ate all the way through them!!! First clue was coolant in the oil. Of course a complete overhaul was needed at that point. Just wondering if anyone has ever checked their PH level or do you know how often Cummins recommends it for their 8.3L or 9L engines? Are there tablets to drop in the coolant reservoir to bring the PH level up? I need to study up on this...............:rolleyes:
 
Joined
Nov 4, 2019
Messages
752
Location
No Where In Particular
RV Year
2020
RV Make
Newmar
RV Model
Dutch Star 4369
RV Length
43’ 9”
TOW/TOAD
2016 Colorado
Fulltimer
Yes
Our 2017 DS did not have extended coolant and required PH to be checked monthly, I have to admit I checked more like every other month. 2020 DS has extended coolant and checked annually.

There is an additive to bring the PH to proper level
 
Joined
Dec 27, 2019
Messages
326
Location
Fredericksburg, VA
RV Year
2005
RV Make
Newmar
RV Model
KSDP 3910
RV Length
39
I can’t say I’ve heard of pH doing that. I have always been focused on SCAs, which I know will do damage if too low. But to answer your question, I check my SCA levels about once per quarter and the strips I use also check pH.
 
Joined
Mar 10, 2020
Messages
44
Location
Mississippi
RV Year
2016
RV Make
Newmar
RV Model
Ventana 4002
RV Length
40' 11"
TOW/TOAD
2020 Gladiator
I check the SCA quarterly in the radiator. I was asked by a tech at Gaffney why so often? Proactive I guess. Do you check the pH in your Oasis system? I check mine yearly. The range should be between 7.5 to 11.
 
Joined
Jan 3, 2020
Messages
80
Location
Texas
RV Year
2015
RV Make
Newmar
RV Model
Ventana
RV Length
44
TOW/TOAD
2013 Ford Explorer
@stang37 What product(s) do you use to adjust PH in you oasis?
 
Joined
Mar 10, 2020
Messages
44
Location
Mississippi
RV Year
2016
RV Make
Newmar
RV Model
Ventana 4002
RV Length
40' 11"
TOW/TOAD
2020 Gladiator
Haven't had to adjust the PH yet. A friend with a 2013 unit who's ph was below 6.0 just changed the fluid. His looked really bad. It's costly and a little involved but not hard to do. He followed the ITR directions and finished in about 6 hours.
 
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