Hi
I recently had a head gasket change because there was oil getting into my coolant but now i have oil left in my coolant system.
What is the best way to flush the remaining oil residue from the coolant system please?
What is best way to flush oil from coolant system please
Moderator: RichardW
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Re: What is best way to flush oil from coolant system please
Do NOT use Dishwashing detergent, they have high salt levels and the alkalinity attacks Aluminium.
Many recommend bleach (1/4 pint) and two hot drain/refils then New Coolant mix. Take care of the pressure cap as you do not want it going "Old Faithful" on you.
Many recommend bleach (1/4 pint) and two hot drain/refils then New Coolant mix. Take care of the pressure cap as you do not want it going "Old Faithful" on you.
Alasdair
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and lots of Rovers before that: 1935 Ten, 1947 Sixteen, 1960 P5 3-litre, 1966 P6 2000, 1972 P6 2000TC, and 1975 P6B 3500S - x 1752
Re: What is best way to flush oil from coolant system please
No DIY brews for this job. Too great a risk of contamination and/or damage.
Get hold of a can (or two) of this, which is designed to do just that job:
LiquiMoly - Radiator Cleaner
300ml can
Art-Nr. 2506
Removes calc, oil, grease, etc from complete cooling system.
Follow the instructions.
Afterwards, flush out copiously with water, and then use ONLY distilled/demineralised water if any is needed.
Have used this successfully on my 2.5 XM after the entire cooling system was filled with engine oil. Leaves system spotless.
Get hold of a can (or two) of this, which is designed to do just that job:
LiquiMoly - Radiator Cleaner
300ml can
Art-Nr. 2506
Removes calc, oil, grease, etc from complete cooling system.
Follow the instructions.
Afterwards, flush out copiously with water, and then use ONLY distilled/demineralised water if any is needed.
Have used this successfully on my 2.5 XM after the entire cooling system was filled with engine oil. Leaves system spotless.
Chris
Re: What is best way to flush oil from coolant system please
Forte sell a cooling system bio degreaser, it's specifically for this job, always keep a couple of bottles in stock.
http://www.marklightfootltd.co.uk
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Re: What is best way to flush oil from coolant system please
I'd use a hose and some of that flush already recommended. I've had a lot of success flushing out engine blocks and radiators with a hosepipe.
My method is to remove all the hoses then flush the radiator and block for a long time in both directions. I tend to take the hoses indoors and clean them in the sink with a bottle brush and degreaser. Then reassemble, refill with the radiator degreaser, run until hot. Change the coolant a few times with just water and get it hot between changes. Then put fresh coolant on the last change. The heaters seem to gain 20 degrees after a good flush on my old cars, does them a lot of good I think.
My method is to remove all the hoses then flush the radiator and block for a long time in both directions. I tend to take the hoses indoors and clean them in the sink with a bottle brush and degreaser. Then reassemble, refill with the radiator degreaser, run until hot. Change the coolant a few times with just water and get it hot between changes. Then put fresh coolant on the last change. The heaters seem to gain 20 degrees after a good flush on my old cars, does them a lot of good I think.
- white exec
- Moderating Team
- Posts: 7445
- Joined: 21 Dec 2015, 12:46
- Location: Sayalonga, Malaga, Spain
- My Cars: 1996 XM 2.5TD Exclusive hatch RHD
1992 BX19D Millesime hatch LHD
previously 1989 BX19RD, 1998 ZX 1.9D auto, 2001 Xantia 1.8i auto
and lots of Rovers before that: 1935 Ten, 1947 Sixteen, 1960 P5 3-litre, 1966 P6 2000, 1972 P6 2000TC, and 1975 P6B 3500S - x 1752
Re: What is best way to flush oil from coolant system please
The LiquiMoly product above makes light of the need for repeated flushing. It really does work well, and avoids having to dismantle.
From memory, 1 x 300ml can treats 10 litres of system - but check this out on their website.
From memory, 1 x 300ml can treats 10 litres of system - but check this out on their website.
Chris