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  #1  
Old 09-16-2010
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94 Bird 94 Bird is offline
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Default Antifreeze Help?

I need antifreeze and I bought some DELO Extended Life RED concentrate for heavy duty engines. The label says it meets or exceeds ASTM D3306, D4340 and ASTM D6210. It also states; no silicate gel formation or silicate drop-out. The manual says use low silicate ethylene glycol standard GM6038M. My antifreeze is Green and I have no idea what the PO put in. Do you think it is safe to mix them together?
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Old 09-16-2010
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While I have no direct knowledge of this anti-freeze product I have always been taught to never mix colors of anti-freeze. Green stays green etc. Others that know more will jump in.

I have used green Shellzone in my 8.3 Cummins.

I am not familiar with the 2 strokes or if they require a special anti-freeze.
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Old 09-16-2010
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Extended life coolant should never be mixed with the regular coolant. A thorough purge should be done before installing the ELC. Distilled water is the preferred method.
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Old 09-16-2010
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Stewart,
Antifreeze has become a Marketing Mystery, so further investigation may be needed. Extended Life & Permanent Antifreeze are two confusing terms. Colors: there are many Caterpillar Purple, Green, Yellow, Gold, Red and probably more. I do believe the Orange should not be mixed with other colors.
It is best to find out what is in your coach then test for SCA , Nitrates and possibly PH. And check the freeze point.
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Old 09-16-2010
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Mark,
This is driving me crazy because I can't find the Green stuff anywhere. I guess I will have to change all the antifreeze before to long.
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Old 09-16-2010
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Default antifreeze

The only advantage to the ELC coolant is that there is no need to add or check SCA , Nitrates and PH. It is good for 6 years. The downsides are many. It is expensive ($16.00/gal @ CAT dealer), the need to flush well (2/3 full flushes are recommended w/distilled water), and it does seem to find the weakest link (leaks). My reason for changing was that I wanted to replace all of the hoses and I also ended up replacing the water pump, thermostat, idler pulley, aux pump, recored the radiator, etc. Quite a project (expensive, but I didn't want to open the front for the hoses or coolant issues again for a while). I do believe this will be worth it in the long run, but not a project for a person in a hurry. Good luck
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  #7  
Old 09-16-2010
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No PH test with the orange, but from what I have gathered, a few law suits. I have converted some of the things I have to orange, from green if the Rad. is aluminum.
Orange is supposed to work better with Amuminum radiators, but I guess that's up for debate.
I never mix, although some of the Anitfreeze that I have seen says that you can use it with anything.
I use Prestone green in my bus, and I check the PH.
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Old 09-16-2010
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Most any truck stop should carry the green diesel truck style antifreeze. Be sure it is for diesel engines and not just regular auto type anti-freeze. Shellzone description for example:

Product Description
Shellzone
® Antifreeze is a high quality, single phase, ethylene glycol based antifreeze. It is a low silicate, all-purpose coolant designed for use in both automotive and heavy duty diesel engines (with the use of SCA’s). Shellzone® Antifreeze Prediluted 50/50 is a 50/50 volume mixture of Shellzone® Antifreeze with deionized water.

http://www.shellusserver.com/products/pdf/Shellzone.pdf
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  #9  
Old 09-16-2010
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I have some Prestone from wal-mart that I used for topping off the Primus. The label says it's Silicate, phosphate, borate and nitrite free. It also says all models of cars and LIGHT trucks. Mix with any color antifreeze and meets ASTM D3306 & ASTM D4985 standard. What do you think?
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Old 09-16-2010
Jim Harvie Jim Harvie is offline
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Shell products are good.
Here's a link for Prestone, and if you scroll down, you'll see the truck type.
http://www.prestone.com/products/ant...t/product_list
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