Oil in the radiator

[wavecxs]

...happens to my Dad's Isuzu Highlander. Walang oil leak (or at least wala kami makita), hindi rin nagbabawas yung oil (and water) at yung takbo nung highlander oks naman, parang walang problem. But everytime we open the radiator cover ang daming oil na nakamix dun sa water. Ano po kaya ang problem? Any recommended talyer na expert on this?

TIA

[mbeige]

Are you sure it's oil, and not rust? Oil does not mix in water. It stays on top and is immiscible.

[wavecxs]

Are you sure it's oil, and not rust? Oil does not mix in water. It stays on top and is immiscible.

it sure is oil. and let me correct myself, it's not (literraly) mixed with water but rather, i meant to say there are small amounts of oil in the radiator, together with the water.

[Galactus]

Have your cylinder head gasket replaced ASAP. I'm quite sure that's the source of your problem.

[userfriendly]

+1 on cylinder head gasket. Get it checked by a reputable shop as soon as possible. baka lumala pa ang problema.

[NightRock]

baka mag sharon cuneta yan engine.. mag tubig at langis.. pa check mo na agad bago ka pa abutin ng overheat. or baka meron lang portion ng gasket na may leak pa try mo pa check ang higpit ng mga bolts

[speedyfix]

better have the head checked narin by a machine shop kung derecho pa sya.

[blink21me]

most likely the headgasket... pop your hood and take a look at it...

[m_ron]

now you're learning....

[wrcastro_ph]

Baka naman po coolant lang ... may mga coolant kasi na pag luma na ay parang oil ang tingin natin.

[ARB]

before replacing the head gasket, let the mechanic first check the oil cooler. this is common to isuzu engines ng hilander, there might be tiny holes in the oil cooler which is usually rusted na if you have not been changing the coolant often.

the only way the head gasket will get busted if the engine before had been overheated. Isuzu engines are robust but its no.1 enemy is overheating.

BTW mahal yan oil cooler na yan mga 4k sa casa, some technicians sa casa just weld the holes if its just small pa lang sort of band aid solution. when changing the coolant, be sure to flush the entire cooling system to get rid of oil deposits in the cooling system. I know this for a fact since it happened to my inlaws hilander also.

[wavecxs]

thanks to all your replies.. really helped a lot. Yes, initial suspect is the head gasket, but a nearby talyer ruled it out ok naman daw.

*ARB >> oil cooler din yung suspect ng friend ng Dad ko. it makes sense now, mahal nga sa casa 7K pa nga e.

about the highlander, it has never overheated in its 6 year life, not once. kahit ngayon na may problem we still you it (short trips, pang hatid ng kids) and wala syang pinapakitang sign na may sira sya, but you are all correct dapat ng mapatignan na to bago lumala.

again, thanks to you all. kung may masa suggest kayo ng talyer, please do so, wala ako ng alam na expert sa diesel engines e.

[m_ron]

the only way the head gasket will get busted if the engine before had been overheated.

False .

[speedyfix]

too much boost can do it too... head will lift and gasket warps.

also if you have lots of detonation it is possible to damage the headgasket too.

[m_ron]

too much boost can do it too... head will lift and gasket warps.

also if you have lots of detonation it is possible to damage the headgasket

too.

true .

[ARB]

False .

I'm talking about this engine lang not all, since he did not mention that the water in the radiator is going out the filler, it can be concluded that the head gasket is not yet damaged. In most cases sa diesel the head gasket gets damaged by overheating. And since this engine is not a turbo engine we can rule out also over boost. And if turbo over boosting will result to higher temp thus damaging the gasket. As far as I know the gasket of the 4ja1 is metal lined so its number 1 enemy is heat.

I know what i said does not apply to all engines, only on this instance that is why I was asking him about the history of the engine.

[m_ron]

I'm talking about this engine lang not all, since he did not mention that the water in the radiator is going out the filler, it can be concluded that the head gasket is not yet damaged. In most cases sa diesel the head gasket gets damaged by overheating. And since this engine is not a turbo engine we can rule out also over boost. And if turbo over boosting will result to higher temp thus damaging the gasket. As far as I know the gasket of the 4ja1 is metal lined so its number 1 enemy is heat.

I know what i said does not apply to all engines, only on this instance that is why I was asking him about the history of the engine.

cool .