The coolant bottle is also the "service" point for the system. A coolant change involves simply draining the coolant at the bottom of the radiator, then topping up the radiator with fresh fluid until it it’s full. Wondering if you can use a generic or non-approved Volkswagen coolant? 0 Answers Belt routing diagram for 2003 VW jetta 2.0. Lifetime Coolant should be changed every 40,000 miles. A coolant flush may not clean it out. G11 (blue) was used from about 1990 to mid 1996. G11 is a phosphate free anti-freeze and is blue in color. Add to reservoir with engine running until coolant mix is between min and max lines. VW uses three types of coolants in its vehicles, based on when it was produced. Can you mix coolants? Anyone have a write up on doing a flush. 2003 Volkswagen Jetta TDI ... Aug 07, 2017 | 2003 Volkswagen Jetta TDI. When trying to keep a VW Passat in top operating condition, it is necessary to perform routine maintenance, including flushing the radiator. If you can operate a wrench and follow directions, then you can complete this maintenance with relative ease. 2- Draining the VW coolant from the V6 cooling system: There is a 8mm Allen drain plug on the back side of the subframe cross member offset to the drivers side. Re: Coolant Flush on TDI (speedR) 09-30-2003 11:53 PM #4 The best way to get all the coolant out is to drain the radiator, then remove one of the coolant hoses going to the oil cooler. Coolant gets extremlely hot, and trying to do a flush, or anything with your coolant when the car is hot is a stuipid idea. Excess pressure can rupture hoses, the heater core, and the radiator. ... TDI, modifications, troubleshooting, maintenance, and more! I'm wanting to flush it just in case. Wondering what type of coolant your VW uses? Even though your temp sensor says 90 degrees, thats in a pressurized system and when exposed to atmosphere, the temperature can raise upwards of 30 degrees Celsius. You can use a commercial coolant flush, but you have to remove all your coolant and refill with water prior to running the flush usually. Alternatively, the technician can remove the drain plugs on the engine block, which lets all the coolant drain out of the engine and cooling system components, and then top up with new coolant. VW Coolant - VW G13 G12 Coolant - Pink Purple Audi Coolant How To Change Engine Coolant On A VW V6: 1- When the engine has cooled down, remove the VW coolant tank cap. 5.) VW coolant types include G11, G12+, G12++, and G13 coolant specs. VW's use VW TL 744-C, VW TL 744-F, VW TL 744-G, or VW TL 744-J coolant antifreeze. Aug 05, 2014 | 2003 Volkswagen Jetta TDI… Full Forum Listing. Hi, I just purchased a TDI with 50,000 miles on it and the guy who sold it to me said that he did a coolant flush recently but doesn't remember if he used the VW specific coolant. Mix G12 ++ coolant with water at 40/60 for -13 F 50/50 for -31 F and 60/40 for -40 F. For 06 and 07 GTI's coolant capacity is 7.8 Liters/ 8 Quarts; for 08 and 09 GTI's coolant capacity is 8 Liters / 8.4 quarts. Coolant. how to change/flush coolant on a 2003 jetta - Volkswagen 2003 Jetta TDI question. These and mor Browse Categories Answer Questions . Search Fixya. How to Flush the Radiator in a VW Passat by Contributor . While it is next to impossible to get all of the coolant and contaminants out of the system without removing the heater core lines and blowing out the heating system this method will get the system as clean as possible and more than good enough for the next three years. If you are changing your coolant this is also the perfect time to give you cooling system a complete flush. Old coolant leads to deposits & corrosion.