Tech / Misc Tech topics that don't seem to go elsewhere. Show Can I mix my green oem coolant with the new blue Type 2 coolant.Junior Member Thread Starter
Join Date: Apr 2003 Location: Pothole City, Canada Posts: 52 Likes: 0 Received 0 Likes on 0 Posts Honda-Tech Member
Join Date: Sep 2006 Location: MS, USA Posts: 960 Likes: 0 Received 0 Likes on 0 Posts yes is the answer Member
Join Date: May 2005 Location: under ur bed Posts: 1,714 Likes: 0 Received 0 Likes on 0 Posts He's correct yes you can mix the new blue with your old green. We do it all the time at Honda. On my own personal car I drain the radiator and the block than fill my whole system with the blue coolant. That's just me tho. Junior Member Thread Starter
Join Date: Apr 2003 Location: Pothole City, Canada Posts: 52 Likes: 0 Received 0 Likes on 0 Posts so it wont damage anything ? Member
Join Date: May 2005 Location: under ur bed Posts: 1,714 Likes: 0 Received 0 Likes on 0 Posts nope wont damage anything.. haven't had a customer's car come back yet, and it's been 3years. lol Member
Join Date: Feb 2004 Location: Casa Grande, AZ Posts: 1,326 Likes: 0 The blue is the same as the green just no silica. Witch is a good thing. Honda-Tech Member
Join Date: Feb 2005 Location: Ohio Posts: 1,590 Likes: 0 Received 1 Like on 1 Post Quote: Originally Posted by KWayRacing yes is the answer this is wrong. You can mix IOAT (red,gm-yellow,ford-blue,honda-etc) and OAT (green) coolant. Once you do that though you have to start following the service schedule for the oat (green) coolant. which is about every 2 years. The difference in the coolants is the additives they have in them. The extended mile stuff uses InOrganic Additives which last longer, while the green stuff has organic additives which doesnt last as long. Honda-Tech Member
Join Date: Mar 2002 Location: in this nutshell Posts: 2,657 Likes: 0 Received 0 Likes on 0 Posts yeah, i use toyota red coolant with mine, cuz its free...but dont use the orange stuff, bad news. Honda-Tech Member
Join Date: Aug 2007 Location: bristolville/lima OH Posts: 110 Likes: 0 Received 0 Likes on 0 Posts mixing gm dexcool(orange) with green is bad. a chemical reaction between the two turns it to sludge Honda-Tech Member
Join Date: Sep 2006 Location: MS, USA Posts: 960 Likes: 0 Received 0 Likes on 0 Posts Quote: Originally Posted by srmofo this is wrong. You can mix IOAT (red,gm-yellow,ford-blue,honda-etc) and OAT (green) coolant. Once you do that though you have to start following the service schedule for the oat (green) coolant. which is about every 2 years. The difference in the coolants is the additives they have in them. The extended mile stuff uses InOrganic Additives which last longer, while the green stuff has organic additives which doesnt last as long. Check out page 2 of this article published by honda. http://www.in.acura.com/Rjanisis/pubs/SN/A950500.PDF Honda-Tech Member
Join Date: Feb 2005 Location: Ohio Posts: 1,590 Likes: 0 Received 1 Like on 1 Post Quote: Originally Posted by KWayRacing thats pretty funny considering I have been using "lesser quality" coolants in my hondas since about '95. I have never had an issue with excessive corrosion, plugged radiators, or leaky water pump seals. That article just looks like marketing propeganda to me, we get **** like that all the time from the different manufacturers we deal with. If the proper maintance schedule is followed the part will fail long before any issue arise from a non-honda fluid. Im not argueing that they havent designed a superior fluid specifically for their parts, just the fact that it doesnt really matter as long as the maintance schedule is followed. AND FOR THE LAST TIME MIXING DEX-COOL AND GREEN WILL NOT TURN TO SLUDGE. Where did you people get that from??? Quit speading myths, it makes my job a headache. I will bet you the cost of 2 gals of anti freeze. Go try it yourself, video tape it, and if it turns to sludge I will pay-pal you the money. I warn you though you'll just be wasting 20$, hell buy a paint mixer and heat it with a torch and it still will not turn to sludge. Honda-Tech Member
Join Date: Mar 2002 Location: in this nutshell Posts: 2,657 Likes: 0 Received 0 Likes on 0 Posts well, i dont know what chem. reactions happen when mixing dexcool and the reg. ****, but i can say i have personally seen a toyota with 9,000mi. on it completely ruin a longblock (head and block warped due to overheating) from being filled with dexcool. no sludege, just f*ked...take it or leave it. Honda-Tech Member
Join Date: Feb 2005 Location: Ohio Posts: 1,590 Likes: 0 Received 1 Like on 1 Post why did they have to add coolant to a vehicle with 9000 miles? exactly, something caused the coolant to be low, customer overheated it, then added coolant to the already damaged engine. your dealership was looking for a way to avoid paying for an engine. You are wrong. dexcool will not cause any chemical reaction that will cause a toyota to overheat, something else did The following users liked this post: Honda-Tech Member
Join Date: Mar 2002 Location: in this nutshell Posts: 2,657 Likes: 0 Received 0 Likes on 0 Posts Quote: Originally Posted by srmofo why did they have to add coolant to a vehicle with 9000 miles? exactly, something caused the coolant to be low, customer overheated it, then added coolant to the already damaged engine. your dealership was looking for a way to avoid paying for an engine. You are wrong. dexcool will not cause any chemical reaction that will cause a toyota to overheat, something else did body shop put it in-accident/replaced radiator. and we didnt pay for it...the body shop did. Honda-Tech Member
Join Date: Sep 2014 Posts: 2 Likes: 0 Received 0 Likes on 0 Posts Hey guys, apologies for restarting an old thread. But I am trying to get a definitive answer to my question below: Will this harm my engine/coolant system? If so, should I get my radiator flushed and replace with all new Honda Type 2? Approximately how much does that cost? Thank you! Honda-Tech Member
Join Date: Mar 2004 Location: failing a car near you..... Posts: 4,584 Quote: Originally Posted by Daks0606 Hey guys, apologies for
restarting an old thread. But I am trying to get a definitive answer to my question below: Will this harm my engine/coolant system? If so, should I get my radiator flushed and replace with all new Honda Type 2? Approximately how much does that cost? Thank you! Honda Green is compatible with Honda blue,though it will render the life of the blue coolant shorter. Valvoline Green however is likely formulated to be "universal" and may or may not be compatible with your vehicles current coolant. Ignore everything srmofo has said. It is pure ignorance..... Honda-Tech Member
Join Date: Sep 2014 Posts: 2 Likes: 0 Received 0 Likes on 0 Posts Thank you so much DCFIVER! I appreciate the reply. Considering that the Valvoline Green may not be compatible with the Honda Blue, I am planning to get a Coolant flush with the Honda Type 2 Coolant. I guess that should resolve things. So I'm out a $100 then Trial User
Join Date: Oct 2014 Posts: 7 Likes: 0 Received 0 Likes on 0 Posts I HAVE ALWAYS READ ON EVERY NEW RADIATOR I HAVE SEEN A LITTLE SIGN STATING "AVOID MIXING OF COOLANT" OR SOMETHING LIKE THAT MY ADVICE DRAIN AND REFILL ITS NOT THAT HARD JUST BE SURE TO LEAVE VALVE OPEN THAT IS USED TO LET AIR ESCAPE DON'T LET ANY AIR REMAIN IN LINES Honda-Tech Member
Join Date: Oct 2014 Posts: 14 Likes: 0 Received 0 Likes on 0 Posts You should only add the same coolant you have in the car. Red/orange definitely don't use because those are specifically for some European cars. Now if you wanted to change it to blue then empty it, cycle some plain water through it to wash it out and add blue. Mixing can occasionally cause the coolant to clog up. Thread Thread Starter Forum Last Post Paprika Honda Civic / Del Sol (1992 - 2000) 7 06-13-2022 05:32 PM OldMrAccord Honda Accord (1990 - 2002) 7 11-24-2010 07:40 PM 2000civicsilver Honda Civic / Del Sol (1992 - 2000) 3 07-28-2008 08:46 PM return_2020 Honda Civic (2001 - 2005) 4 08-19-2006 08:53 AM silvercivicsir Honda Civic / Del Sol (1992 - 2000) 10 09-18-2005 11:20 AM 2003, blue, civic, coolant, coolants, damage, green, honda, kind, mix, oem, ruckus, type, use, wrong Is it OK to mix blue and green coolant?The answer to that is Yes. You can mix Peak with Zerek or Prestone – but only as long as the coolant is the same chemical type. The ratio doesn't matter as much, but the type & application should match. The easiest way to remember is that you should try and match type – IAG with IAG, OAG with OAG and HOAT with HOAT.
What type of coolant is blue?Phosphated HOAT (P-HOAT)
This coolant comes in pink or blue colour. Phosphated HOAT uses phosphates along with organic acids to prevent corrosion.
What happens if you use the wrong color antifreeze?It's important to note that the type of coolant you should use can't accurately be identified by color. Using the wrong coolant can lead to corrosion and other damages to the radiator, water pump, radiator hoses, cylinder gasket, and more.
Does color of coolant matter?The truth is, color is not a reliable predictor for what type of coolant you have.
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