Oil in the radiator

**ARB** · November 20th, 2006 07:28 AM

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** · November 20th, 2006 10:39 AM

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** · November 20th, 2006 11:32 AM

Originally Posted by ARB

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

False .

**speedyfix** · November 20th, 2006 10:46 PM

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** · November 20th, 2006 10:56 PM

Originally Posted by 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.

true .

**ARB** · November 21st, 2006 08:17 AM

Originally Posted by m_ron

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** · November 21st, 2006 08:20 AM

Originally Posted by ARB

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 .