Coolant...

[oj88]

I owned a Civic FD before.

If losing coolant, check first if there are any signs of leaks around the cooling system... hose, radiator, reservoir, water pump, etc.

Kung walang obvious leaks externally, it could be a blown head gasket. Mausok ba exhaust (white/steamy)?

[bxr monkey]

Kaya maganda din maglagay ng coolant imbes na plain water. Iyong kulay sa coolant makaka-tulong ma trace kung saan ang leak, singaw, or pawis. Plus iyong tulo ng colored coolant sa parking floor makikita kung saan general area sa engine galing.

[chrshaha]

I owned a Civic FD before.

If losing coolant, check first if there are any signs of leaks around the cooling system... hose, radiator, reservoir, water pump, etc.

Kung walang obvious leaks externally, it could be a blown head gasket. Mausok ba exhaust (white/steamy)?

Not sure if its normal ba, pero pag kaka start po may usok na white sa exhaust, tapos nung pina check ko po hindi naman din daw blown head gasket. I will check din po again if may leak, ilan days ko na inoobserve hndi ko talaga makita. Yung sa waterpump naman po hindi ko din makapa if meron ba

[chrshaha]

Kaya maganda din maglagay ng coolant imbes na plain water. Iyong kulay sa coolant makaka-tulong ma trace kung saan ang leak, singaw, or pawis. Plus iyong tulo ng colored coolant sa parking floor makikita kung saan general area sa engine galing.

Naka coolant po ako before mangyari tong mga to, and meron din po ako pwedeng ilagay ngayon kaso may isang mekaniko po kasi na nag sabi sakin palitan buong radiator kaya hindi ko pa nilalagay, ang hirap pag iba iba kasi sinasabi ng mekaniko that's why I tried asking here. Thank you po!

[oj88]

To add, the Civic FD uses Honda Type 2 coolant (blue color). It is long life and it's the coolant my FD had when I bought it new. At the time (2008), Honda dealerships only sold the Type 1 (red color). It's a "pwede na" substitute but you will need to replace it more often. I had to search for Type 2 coolant elsewhere to do my own top-ups.

"pula" o "verde" are the two popular ones.

The coolant color is just a dye they added to make it more prominent when troubleshooting and/or finding leaks. It's not a code or anything else. In other words, mixing different coolants with the same color doesn't mean they are compatible with each other.

There have been horror stories of coolant turning into gel and clogging the cooling system because the wrong coolant was added, even though it was the same color as the OEM.

[dr. d]

To add, the Civic FD uses Honda Type 2 coolant (blue color). It is long life and it's the coolant my FD had when I bought it. At the time (2008), Honda dealerships only sold the Type 1 (red color). It's a "pwede na" substitute but you will need to replace it more often. I had to search for Type 2 coolant elsewhere to do my own top-ups.



The coolant color is just a dye they added to make it more prominent when troubleshooting and/or finding leaks. It's not a code or anything else. In other words, mixing different coolants with the same color doesn't mean they are compatible with each other.

There have been horror stories of coolant turning into gel and clogging the cooling system because the wrong coolant was added, even though it was the same color as the OEM.

noted.
some literature warns not to mix the green with the red, even as others say fine.
i prefer to play it safe.

[carxynogen]

Kaya maganda din maglagay ng coolant imbes na plain water. Iyong kulay sa coolant makaka-tulong ma trace kung saan ang leak, singaw, or pawis. Plus iyong tulo ng colored coolant sa parking floor makikita kung saan general area sa engine galing.

Eto yung best chance mo for troubleshooting kung saan ba talaga galing leak.

Naka coolant po ako before mangyari tong mga to, and meron din po ako pwedeng ilagay ngayon kaso may isang mekaniko po kasi na nag sabi sakin palitan buong radiator kaya hindi ko pa nilalagay, ang hirap pag iba iba kasi sinasabi ng mekaniko that's why I tried asking here. Thank you po!

Also, precaution lang for using distilled water even if it is temporary.
Someone had experiment to compare metal inside distilled water vs coolant for 30 days.
Result is kinalawang pa rin yung metal inside distilled water, yung sa coolant ay walang signs of kalawang.

[chrshaha]

Honda Civic 2008 FD 1.8s, meron na din po akong coolant na ready ilagay, kaso nag babawas kasi before kaya hindi ko pa nilalagay and nung pina check ko sabi palitan ko daw buong radiator, yung iba linis daw radiator, yung iba relay so hindi ko talaga alam hehe I can insert or send a picture of the radiator if you want to see! Thanks!

UPDATE: The leak was found na, and it was the bypass hose. Tagong tago naman kasi 😂

[dr. d]

UPDATE: The leak was found na, and it was the bypass hose. Tagong tago naman kasi ��

ta-dah!
heh heh.

just imagine what would have happened, had you opted to heed the mechanics' advice and replaced the radiator...

[chrshaha]

ta-dah!
heh heh.

just imagine what would have happened, had you opted to heed the mechanics' advice and replaced the radiator...

I didn't, I went to another mechanic who found the bypass hose leaking and said that the radiator is fine!

[Miles_on]

One time I was in Banawe and this guy drove up to the shop next door. He asked the freelancer mechanic there what could be wrong with his cooling system since he was still overheating, despite having the radiator overhauled and replacing the radiator cap. Ang sabi ba naman sa kanya: "Ser, baka sa radiator fan, malambot na yung plastic kaya hindi na nakakahigop ng hangin ng maayos".

Note: This is different from yung isang case na nakwento ni Doc dati where the fan motor still turned the fan, but was performing at subpar capacity from when new. Here, yung fan blades daw yung may issue.

Hindi rin niya pinagawa. I'm pretty sure the guy wasn't that convinced din either...

[dr. d]

One time I was in Banawe and this guy drove up to the shop next door. He asked the freelancer mechanic there what could be wrong with his cooling system since he was still overheating, despite having the radiator overhauled and replacing the radiator cap. Ang sabi ba naman sa kanya: "Ser, baka sa radiator fan, malambot na yung plastic kaya hindi na nakakahigop ng hangin ng maayos".

if his car is a sentra, i'd be pretty convinced it's the fan motor.
the mechanic probably also thought so, but couldn't articulate it succintly enough.
heh heh.

[jick.cejoco]

if his car is a sentra, i'd be pretty convinced it's the fan motor.
the mechanic probably also thought so, but couldn't articulate it succintly enough.
heh heh.

Try using a handheld anemometer on both cars and compare condenser fan airflow

[Miles_on]

I've seen one of those for sale at Ingco power tools, but aside from a meteorologist, I always wondered who else would need such a device.
Now I know it's material to measure the airflow of ducted fans.

[jick.cejoco]

I've seen one of those for sale at Ingco power tools, but aside from a meteorologist, I always wondered who else would need such a device.
Now I know it's material to measure the airflow of ducted fans.

This day and age we just don't rely on the "Mechanic's (oido). A modern auto technician should use all the necessary instruments to obtain diagnoses and information in digital form be it numerical or yes/no. No time for guessing.

[baludoy]

Do leftover coolants get "spoiled " when stored as proper as can be? Meaning it's not exposed to sunlight, it's stored in a cool and dry place, its bottle cap is screwed on tightly, etc.

[LOLZ]

Do leftover coolants get "spoiled " when stored as proper as can be? Meaning it's not exposed to sunlight, it's stored in a cool and dry place, its bottle cap is screwed on tightly, etc.

Prestone claims 10 years for sealed bottles and many years for opened one(presumably the same 10 years if stored as good as could be).

[oj88]

Do leftover coolants get "spoiled " when stored as proper as can be? Meaning it's not exposed to sunlight, it's stored in a cool and dry place, its bottle cap is screwed on tightly, etc.

Many years ago, I bought a 4-liter Toyota Super Long Life Coolant. I only use it for top-ups. Years later, I saw shimmering substance and other sediments collecting at the bottom of the jug. It seems that the additives have separated and so, the coolant is no longer usable. I only kept it in my workshop which is mostly pitch dark when I'm not using it.

My recommendation is, buy just enough of it and throw it away after a year it's been opened.... or as soon as you see sediment at the bottom of the container.

[Dr.Kamiya]

I don't think you need to use coolant for top-ups. Distilled water is better.

Normally the cooling system is sealed and it will only lose coolant through the overflow tank. But when going into the overflow it's only water that gets turned into steam and ends up there, the ethylene glycol (boiling point 197C) and other additives in the coolant remain in the radiator loop. Thus topping up with coolant slowly increases the coolant concentration in the engine with each top-up. Topping up with distilled water replaces only the water that was displaced and keeps the coolant concentration the same.

[Dr.Kamiya]

So what's wrong with increased coolant concentration? The cooling capacity mostly comes from water, not coolant.

Water has a specific heat of about 4.19J/g-C. Ethylene glycol is only a bit more than half that at 2.36J/g-C. The commonly used 50-50 mix is 3.56J/g-C, but you can see that most of the cooling will be coming from the 50% water mix. As the amount of water in the coolant is reduced, the cooling capacity reduces sharply until you end up closer to the 2.36J/g-C of ethylene glycol.

OTOH a 75% water / 25% ethylene glycol mix will have a specific heat of 3.93J/g-C, which is a lot closer to pure water. We don't really have winter so the anti-freeze properties aren't as needed. We just need the additives in the coolant that prevent galvanic corrosion, and this can be done with as little as 15% anti-freeze.