Is coolant stop leak bad for engine?
In the end, off-brand products could possibly damage your engine – we hear stories about it on a weekly basis. When you carefully follow the instructions for our engine, radiator or other stop leak products, there is no risk of damage.
Do coolant stop leak products work?
Simply stated, it stops leaks in the leak and not on top of the leak. Many radiator stop leak products are made of large particles that clog both leaks and cooling systems! Manufacturers recommend any insoluble particles in the cooling system be no larger than 700 microns.
How long does stop leak take to work?
How long does it take for the Bar’s Leaks to work? We recommend you drive/idle vehicle for 15 to 30 minutes. In most cases the leak will be sealed with in this amount of time. If the leak is not sealed, a second application maybe required.
How many times can I use stop leak?
So how long can you expect them to last? It depends. If the leak is mild to moderate, we’ve had customers run 10,000-50,000 miles with no further issues. If the leak is more severe, or on the edge of becoming severe, the repair might last a shorter duration.
What causes a slow coolant leak on a Jetta?
This is a fastener-by-fastener description of how I diagnosed and repaired a slow coolant leak as a result of a bad coolant hose flange on a 2001 VW MKIV Jetta Sedan with automatic trans and 2.0L (AEG) engine. This is a known issue with VW engines including the MKIV, and it is the most common cause of a slow coolant leak for this vintage engine.
Why does my VW MkIV have a slow leak?
This is a known issue with VW engines including the MKIV, and it is the most common cause of a slow coolant leak for this vintage engine. Note that the coolant used in many VW engines is G12, only available through the dealer.
Can you use universal coolant on a VW Jetta?
Literature published by VW explains that G12 is not compatible with other coolants, including universal coolant sold elsewhere. They warn that mixing G12 with other coolants might cause engine or seal or sensor damage, and that their warranty may be void if there is evidence of coolant mixing and damage resulting from that.
What happens if you mix G12 with coolant?
They warn that mixing G12 with other coolants might cause engine or seal or sensor damage, and that their warranty may be void if there is evidence of coolant mixing and damage resulting from that. There is another useful description of how this repair is done at the following link done by MikeWire on the VW Vortex forum.