Antifreeze/coolant that is compatible with original

[bevanet]

Hi, I have a M817 dump with the NHC-250 engine. I need to move it a little way and would like to top off the coolant. I'm not planning a flush/fill at this time. What coolant is compatible with the original?
thank you

 

[Superthermal]

You want something with SCAs. I used Napa Commercial. The reason you want this is the NHC 250 is a "wet sleeve" piston cylinder.
Here is the info from my build.

Superthermal's M813 Build, THE BOT

I’m going to guess when yo lay them across your tandems, You will realize this probably won’t work, but will be for a fun experiment though! I would start with just one set. You can always use them on the front. You might look at putting bridge truck dog bones on both or maybe just the rear set...

www.steelsoldiers.com

Superthermal's M813 Build, THE BOT

I have one of those after coolers sitting in my basement that I didn't use because I didn't want to chop my hood. If you run one of those without a huge body lift the cross over pipe will stick through the hood just like on the M813 that @bobbed_deuces_wild (Instagram handle?) put together:

www.steelsoldiers.com

 

[87cr250r]

The NAPA coolant is misleading as it is not an SCA type and is likely incompatible with SCA. It contains no nitrites.

Conventional coolants that meet ASTM D4985 and ASTM D6210. 4985 will require a pre-charge of SCA while 6210 does not. They both require additional dosing of SCA, usually every 300 hours.

Conventional coolants are essentially obsolete and are not easy to find. Check the SDS, if they contain chemicals that end in acid or "ate" they are extended life and not conventional. Carboxylic acid or hexanoate are examples.

Extended life coolants typically only require a booster at half life of 7500 hours. If you're concerned about liner cavitation, there are extended life coolants with nitrites just like the conventionals. Check the SDS. It should say sodium nitrite or sodium salts. Cat ELC is readily available and does have nitrites. Havoline and Chevron have equivalents. If you see coolants with an X in the name like Xtended or XLC they are typically nitrite free formulations

If you don't need antifreeze you can also run straight SCA at 16:1 with water or Cat, Chevron, Havoline ELI at 7.5%.

 

[Superthermal]

The NAPA coolant is misleading as it is not an SCA type and is likely incompatible with SCA. It contains no nitrites.

Conventional coolants that meet ASTM D4985 and ASTM D6210. 4985 will require a pre-charge of SCA while 6210 does not. They both require additional dosing of SCA, usually every 300 hours.

Conventional coolants are essentially obsolete and are not easy to find. Check the SDS, if they contain chemicals that end in acid or "ate" they are extended life and not conventional. Carboxylic acid or hexanoate are examples.

Extended life coolants typically only require a booster at half life of 7500 hours. If you're concerned about liner cavitation, there are extended life coolants with nitrites just like the conventionals. Check the SDS. It should say sodium nitrite or sodium salts. Cat ELC is readily available and does have nitrites. Havoline and Chevron have equivalents. If you see coolants with an X in the name like Xtended or XLC they are typically nitrite free formulations

If you don't need antifreeze you can also run straight SCA at 16:1 with water or Cat, Chevron, Havoline ELI at 7.5%.

Interesting, What kind of additive would you recommend I add to my now... crappy NAPA coolant?

 

[Wreckclues]

The NAPA coolant is misleading as it is not an SCA type and is likely incompatible with SCA. It contains no nitrites.

According to the data sheet it does contain Nitrites.

• Contains Nitrite For Exceptional Wet Sleeve Liner Cavitation Protection.