OIL COOLER LEAK FIXED ON MK4 GOLF GTI 1.8T *OIL COOLER REPLACEMENT*

Hi Everyone, hope you keeping well.
So after knowing I had this issue for a long time I finally decided to replace the entire oil cooler and seal due to the oil finding its way into the coolant.This seems to be a common fault on these vag engines and mine wasn't as bad as some others I've seen. lets see if this will sort the issue out.
#oilcoolerfault #golfmk4 #vwoilcooler
Enjoy the video.

[@Ben-jq5oo]

Brilliant presentation. Excellent visuals with the bumper removed.

[@Mk4heavenHD]

Thank you! Cheers!

[@bradpretorius8896]

finally a video that actually helps, shot man !

[@Mk4heavenHD]

Thanks for watching man, glad it helped you.

[@luisg1653]

Thanks for the video. That looks so much easier with no front end and no sai pump. I have to do this next weekend and it won't be much fun.

[@Mk4heavenHD]

You welcome bro, hope yours is easily done too.

[@oilybrakes]

Done it recently. Is prettying much as dificult as it would be to change the oil filter. Meaning, an easy job. 😁

[@bhugeloo95]

LOVE YOUR VID!! keep it up man thanks, my mk4 bora has this exact issue.. its putting me off from VW alltogether

[@marcelomeirelesdasilva4243]

What is the key number used to loosen the nut that holds the oil cooler?

[@AlexGudkov]

Oil filter rubber surface should be oiled but not O-ring between bracket and oilcooler.

[@mathjuk]

when i first bought my mk2 golf i got it for the bargain price of 350 quid, the guy i bought it from thought it had a blown head gasket as it had mayo in the oil, turned out the oil cooler was leaking water into the oil, it is the same exact setup on these cars :)

[@Mk4heavenHD]

mathjuk - Ah man lucky you, I didn’t know that it’s so common on these cars, fortunately it’s not a hard thing to fix.

[@jamesrichardson4604]

Geat video, will have to check mine as my expansion tank is quite discoloured. But it has done 166,000miles .must be very handy living near a VW dealership lol.

[@Mk4heavenHD]

james Richardson - Yeah the high mileage cars start to show this sooner or later. It’s very handy having Vw close lol

[@jamesrichardson4604]

@@Mk4heavenHD I used to work for Macclesfield Audi a few years ago so it's handy to get discounted prices. Vw and audi used to share the same premises. I live in sandbach Cheshire so not far from you.

[@Mk4heavenHD]

james Richardson - Ah right I remember going to that Macc dealership to pick up a thermostat for the golf as Vw near me were out of stock. These cars are fun and games lol!

[@AH-nw8qg]

An internal leak in the oil cooler, very common problem. My Leon 20vt 1.8t, 220.000 km / 136.000 miles didn't have the problem yet, but I expect it will happen one day. May be I should replace it as a preventive maintenance. Me too, I wish I had a more wider garage, to be able to work comfortably around the car. Outside, rain and some curious neighbours wasting you a precious time to want to know how and what you're doing, we have additional challenges to the mechanical reparation 😁

[@Mk4heavenHD]

A H - Well said mate, When you next service the car just do it as a preventative measure as you will be removing the old oil filter anyway.

[@saylinnaidoo1025]

yo bro your videos help a lot. i have a mk4 golf 1.6sr and have the same problem i want to know whats the best method to clean out the oil from the coolant system

[@Mk4heavenHD]

Hi bro glad my videos help you. I would use a good coolant flush and do it twice to clear the crap out. I’ve made a video on coolant flush if you want to see what I did.

[@KBZ47]

Hey bro! Quick question- when changing the oil cooler did you perform an engine oil flush too? Thanks in advance.

[@Mk4heavenHD]

KBZ - Yes I did that because its a no brainier after you take off the old one, in fact a few videos after this one I had problems with the used cooler I put and decided to put a new one and flushed the cooling system and oil best to do both.

[@NicholasMaietta]

Whoah, cool. I just got a 2001 VW beetle today for $300 which had oil in the coolant tank. Was going to use it as a parts vehicle for my other VW but realized that perhaps the vehicle may only need a oil cooler change. That would be amazing as the car is in pretty good shape and is a 5-speed manual.

[@user-fl2ug7sr3t]

And? Did you fix it?

[@hernes0071]

Can i have the similar problem when my golf has coolant in oil then waporizing into the intake and eventully out the tail pipe.? I had a tiny amount of oil on coolant reserviour after i change the radiaator it only smokes when it reaches 70 degrees.

[@Mk4heavenHD]

It could be the oil cooler mate, if the car has done over 100k miles and still has the original oil cooler I would just change that and see.

[@robthorpemusic]

Looks like Stockport... The parts desk know me well there too, as soon as I say mk4 Golf on the phone!

[@Mk4heavenHD]

Yes mate well spotted lol, Dave is usually the guy I deal with.They have always been helpful.

[@gwizzfpv6741]

could you help i have a skoda vrs 2003 with the 1.8t i am having two problems i have done a smoke test for leaks i am getting a leak coming from the base of the oil dipstick housing ,and then a misfire at high revs on 2.3 ,the car has had a stage 1 revo chip , would this leak be the problem?

[@Mk4heavenHD]

gwizz fpv - Hi, that sounds like a strange one to diagnose 🤔, I personally would switch the coil packs from 1 and 4 then see if that does anything if not I would check the wiring to both the injectors and coilpacks. Hope this helps.

[@seanlyons161]

Great video I find them really interesting! I didn’t know you had a bmw as a backup

[@Mk4heavenHD]

Sean - Thanks mate, BMW is now gone back it belongs to a friend and came in handy.

[@Mk4heavenHD]

Hi Sean, Just a quick question mate, I had a notification for you comment on the undies lol 😂 in my last video but when I click to reply the comment it’s not in the comment section and completely hidden for some reason that I can’t even reply it. weird! Is it showing up in your end in the video? I’m not sure if KZbin is deleting comments or not showing them for whatever reason. Lol by the way don’t worry they were washed before they touched the golf🤣

[@seanlyons161]

@@Mk4heavenHD It was me mate, i deleted my comments, I sometimes regret what i say, thanks for reply mate :)

[@Mk4heavenHD]

@@seanlyons161 - lol no worries mate, I just thought it might be a you tube issue. Have a great weekend mate.

[@seanlyons161]

@@Mk4heavenHD hey I'm not great with social media, I have dormant twitter account @f_zero_x contact me there ?

[@prawny12009]

Is the thread for the oil cooler the same 3/4-16 both ends? Looking for a cheap cooler for a conversion.

[@Mk4heavenHD]

bro I’m not sure, I need to check this next time I service for my my own reference:

[@rapulamphahlele5067]

Nice work. Dude you sound like you from Durban South Africa? your accent

[@Mk4heavenHD]

Thanks LOL. Close Zimbabwean accent bro.

[@Lupillo131986]

Hi... Can you tell me if having a bad oil cooler will cause the engine to lose power? for example if i am driving and i accelerate it feels like it's misfiring, but it's not because I don't get any codes that it is misfiring. I did find oil in my coolant reservoir. The dipstick and engine don't have any coolant. Just did an oil change. Thanks! I have changed spark plugs, coils, airflow sensor.

[@Mk4heavenHD]

Guadalupe Quintana Rodriguez - Hi mate I don’t think a bad oil cooler would cause that. If I were you I would look at how the car is boosting to see if it’s holding boost then I would look at the fuel pump as a friend of mine had a similar issue.

[@Lupillo131986]

@@Mk4heavenHD thank you mate I will look into that

[@rioc3834]

I have a seat Ibiza 1.8t bjx engine and the coolent tank looks quite brown , been told by a garage it’s probably oil cooler, I can’t see it being a head gasket as the car runs perfect still and doesn’t over heat or have issues. Coolent does look like it has oil in it due to the colour

[@Mk4heavenHD]

My thoughts would be the cooler mate, mine was like that for ages. I did everything coolant flush after coolant flush no change until I replaced the oil cooler. There was so much crap in my system I replaced the coolant hoses, flanges and radiator now it stays the pinky colour it should be.

[@rioc3834]

@@Mk4heavenHD should I replace the coolent hoses and radiator too? Or would it be ok with just a new oil cooler and coolent flush with new oil and filter

[@Mk4heavenHD]

@@rioc3834 It should be okay with just a fresh oil cooler and flush but to go the extra mile I think if you do rad, flanges and pipes you have a solid car for a long long time. This way whatever oil deposits are in the rad and pipes is eliminated and you know most of the hardware is oil free.

[@user-fl2ug7sr3t]

Did you fix it

[@AntonioFlores-ib2dj]

Mine doesnt leak or had oil in the coolant resorvior but i hand tight the filter i did the oil change and it unbolted the housing do i just tighten it back or check for it or just get a new one

[@Mk4heavenHD]

There is a nut that holds the oil cooler on to the block, you will need to remove the oil filter tighten it then replace the filter mate.

[@sadz5qcg]

One of my hoses on the oil cooler has a bit of coolant on it, would that be the oil cooler or the hose that’s faulty ?

[@Mk4heavenHD]

It’s hard to say mate without seeing it, if you have coolant on any hoses that would point to a coolant leak somewhere. If it was oil you would either see it in the coolant mixed together or dripping down the engine block. Hope this helps.

[@frankmolefhe8742]

I changed the oil cooler for 2 times in mk5 gt fsi engine and there is still oil in the coolant.. what might be the cause

[@Mk4heavenHD]

Hi mate, the next thing I would do if you still finding coolant in the expansion tank is to do a compression test as this might mean you have head gasket failure.

[@li_6666]

absolutely great！！ come from china

[@RcvzPhotography]

Seems like something that might be my cause of the white smoke and foamy antifreeze in my expansion tank.

[@Mk4heavenHD]

It’s possible mate.

[@williamsmaila2724]

HI BRO on my polo tdi i only see cream on oil cap and i have taken the top to engeneer to check what can be the problem

[@Mk4heavenHD]

That can happen to normal cars also mate I had a Leon Cupra R that did that but was perfectly fine.

[@williamsmaila2724]

@@Mk4heavenHD i dont have to worry about changing oil cooler

[@Mk4heavenHD]

@@williamsmaila2724 It can all depend on you car, I would replace it on the next service as it’s so easy to change and gives peace of mind to be honest. If the oil cooler was gone you would see it in the expansion tank like creamy looking.

[@paulallard4552]

thank you thank you

[@Mk4heavenHD]

No worries bro

[@alanramos2864]

I got a 2003 golf gti 1.8 and there is lots of Fluid poring from the under side when I turn the car on what could be the problem?

[@Mk4heavenHD]

Oh oh have you established what fluid it is? It’s hard to say because that can be a number of things mate.

[@alanramos2864]

MK4-HEAVEN It was just a broken hose

[@alanramos2864]

MK4-HEAVEN but now the car won’t start and it’s not the alternator or the starter I think it’s a key programming thing

[@Mk4heavenHD]

@@alanramos2864 - Ah rite at least you found the issue.

[@alanramos2864]

MK4-HEAVEN I wonder if I gotta go to a dealer ship for a new key or Can a lock smith Provide one ?

[@MayurRamlall]

hey mate, good video. Have replaced oil cooler, now starting the flushing process. Water level warning light not seem to be going off though. Could a sensor have been sludged up somehwere you think?

[@Mk4heavenHD]

Mayur Ramlall - hi mate, I would probably check that the coolant has had the usual self bleeding done just in case there is an air lock, run the car from cold with the cap off and squeeze the pipes to encourage coolant then put the cap on before it gets too hot. Then check the levels of the coolant expansion tank when it’s up to temp and the fans kick in. If this is all okay then check the wiring and plug on the expansion tank.

[@MayurRamlall]

@@Mk4heavenHD hi mate, thanks for the response. Had no luck with that. I gave it a little scrub with a toothbrush and seems to have done the job. Must've been like a fish in the Gulf of Mexico during the BP oil spill. Next problem now is that the radiator drain tap seems to not be sealing properly anymore, must've been too many high pressure drains. Sending thanks from New Zealand.

[@Mk4heavenHD]

@@MayurRamlall - lol at least you’ve sorted it mate, them high pressure drains are dangerous 😂. Nice to see my content making its way to new Zealand 🇳🇿. Keep safe bro

[@dirtbikedom19]

do you need to take off the front end?

[@Mk4heavenHD]

No you don't need to, it's accessible from under the car.

[@jockesgarage6049]

nice. I have to do this to :D

[@Mk4heavenHD]

Go for it mate its not too bad.

[@jockesgarage6049]

@@Mk4heavenHD i do this but my cooler was bad. More leek after i change the gasket. Order a new one :D

[@Mk4heavenHD]

@@jockesgarage6049 - Oh man, hopefully the new gasket sorts it out.

[@jockesgarage6049]

@@Mk4heavenHD i try a new gasket. Still leek so i change the cooler to

[@Mk4heavenHD]

@@jockesgarage6049 okay I see

[@GeraldoJoseph]

Are you From Durban bro?

[@Mk4heavenHD]

No bro from Zim, close though lol.

[@waifuracer6516]

I swear to god when I see an oil filter on a 1.8T I want to run away screaming... People/garages 9 times out of 10 just ram it on there when they change it, instead of following instructions, and after thousands of miles and heat they get welded in place and a bitch to remove...

[@Mk4heavenHD]

WaifuRacer - lol I remember doing my first oil change when I bought the car in 2013 and I literally had to put a screwdriver through the thing and take it off! People always over tighten them and don’t put a slither of oil on the seal.

[@waifuracer6516]

@@Mk4heavenHD btw how is the sludge on yours? I bought mine (octavia rs) with 81k on the clock and a week later the engine was fucked due to sludge, i had no experience with 1.8ts yet so i had no idea its a problem with them. Fitted another engine with 110k that seemed fine, and it does have a fair bit of sludge around the filler cap, just had the first oil change today after 5k. Should i put in a can of liqui molly flush on the next change? Or will it clear up with 5k changes? Or what is the appropriate course of action here? Really dont want the mess the engine up, bunt cant just pull ot apart and clean it out, no space and time...

[@Mk4heavenHD]

WaifuRacer - Mine did have slight sludge on the oil cap and my crank case vent pipes with stock setup but after I upgraded everything on the car and now run a vent to atmosphere setup it’s behaving itself. To be honest as long as you maintaining it with regular oil changes like what you doing 4-5k is good and not doing too many short journeys it should be okay. I would probably look at doing a catch can with vent to atmosphere setup my car seems to like it. It is a common thing on the 1.8T tho.

[@waifuracer6516]

@@Mk4heavenHD I will look into the catch can stuff, heard about it a lot now from many people so it seem like i should have it already! :D Thank you!

[@thiagoesperebien3512]

You sound South African

[@Mk4heavenHD]

Original From Zimbabwe bro.

[@jarrydnovember207]

Bro are you South African? 😂

[@Mk4heavenHD]

Hi bro close lol.. Originally from Zim.

[@jarrydnovember207]

😂 okay then the accent makes sense