Don't add soluble oil to the coolant in a Jetta 4

Post Reply
Johan Jetta 4
Enlisted
Posts: 2
Joined: Fri Dec 03, 2021 12:27 pm

Don't add soluble oil to the coolant in a Jetta 4

Post by Johan Jetta 4 »

I made the mistake of adding soluble oil to the coolant - had some rust in the coolant. Immediate result - water level sensor in the pressure bottle stopped working. I am now flushing the cooling system for the fourth time so that I get rid of the last of the soluble oil. The sensor works for a while after each flush until it gets oil on the probes and I suppose this problem will only go away once the system is completely clear of the oil.

Stay with red anti-freeze.
n.gov3
Cadet
Posts: 121
Joined: Mon Apr 17, 2017 9:24 am
Location: JHB , Sandton

Re: Don't add soluble oil to the coolant in a Jetta 4

Post by n.gov3 »

Johan Jetta 4 wrote: Fri Dec 03, 2021 12:40 pm I made the mistake of adding soluble oil to the coolant - had some rust in the coolant. Immediate result - water level sensor in the pressure bottle stopped working. I am now flushing the cooling system for the fourth time so that I get rid of the last of the soluble oil. The sensor works for a while after each flush until it gets oil on the probes and I suppose this problem will only go away once the system is completely clear of the oil.

Stay with red anti-freeze.
I normally stick with just anti-freeze and changing it every 2 years or sooner
User avatar
Jetta2
Field Marshal
Posts: 14841
Joined: Sun Dec 10, 2006 12:32 am
Car Make: VW, VW, Aprilia
Car Model: Mk3 Golf VR6, Mk4 Caddy, RSV4
Membership No: 1087
Location: Menlo Park, Pretoria

Re: Don't add soluble oil to the coolant in a Jetta 4

Post by Jetta2 »

Why did you do that in the first place?
Ryan Demoser

1996 Mk3 Golf VR6
2017 Caddy Maxi Crew Bus 2.0 TDI
2013 Aprilia RSV4 track toy
2021 Aprilia RS660 road bike
User avatar
EX-DOHCTOR
Field Marshal
Posts: 13599
Joined: Sat Nov 27, 2004 12:25 am
Car Make: VW
Car Model: 2014 Jetta 6 TDi DSG.
Membership No: 712
Location: Bryanston, Johannesburg
Contact:

Re: Don't add soluble oil to the coolant in a Jetta 4

Post by EX-DOHCTOR »

Water and antifreeze in the correct ratio only - and thats it.
2014 - VW Jetta 6 - 1.6 TDi DSG
2000 - VW Golf 3.5 Cabrio - 2.0
1980 - VW MK1 GT - 1.8 Carb - https://www.vwclub.co.za/forum/viewtopi ... 1&t=153861
1971 - Mitsubishi Colt 1100F - https://www.vwclub.co.za/forum/viewtopi ... 1&t=220503
MK1 Build Register: https://www.vwclub.co.za/forum/viewtopi ... 1&t=192835
Instagram: https://www.instagram.com/projectkirschwasser/

Racing is meant for the RACE track - deal with it...
Post Reply