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VW Jetta TDI

3757 messages,  Last post on Dec 07, 2009 at 4:45 PM

You are in the Volkswagen Jetta Forum. Your Hosts are pat & karens

What is this discussion about? Volkswagen Jetta, Biodiesel, Diesel, Sedan


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#3490 of 3757
Re: How to prepare a car to sit for months this winter? [jogousa] by shrifty
Oct 16, 2009 (1:13 pm)
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Replying to: jogousa (Oct 16, 2009 1:58 am)

Thanks to you and sebring for the advice, I should also have mentioned that I live in Western PA (decent amount of winter) and the car will be sitting outside. Also have the auto DSG.
#3491 of 3757
Re: How to prepare a car to sit for months this winter? [shrifty] by m6user
Oct 16, 2009 (2:02 pm)
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Replying to: shrifty (Oct 16, 2009 1:13 pm)

I've had many "vacations" for 3-6months and I just have my wife drive the car every two to three weeks. I'm sure a month has went by between drives as we each tend to drive our own vehicles. Never any ill effects summer or winter. Now a diesel may need some fuel additive but I don't think you need to worry that much about air conditioning seals etc. Like someone else said, cars set on dealers lots for months sometimes with very little activity.
#3492 of 3757
Re: How to prepare a car to sit for months this winter? [shrifty] by jogousa
Oct 16, 2009 (4:54 pm)
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Replying to: shrifty (Oct 16, 2009 1:13 pm)

Just about every car's manual (in the glove box) recommends running A/C at least once every 2 weeks. Here is an example of such recommendation from one such publication:
 
Tip 1: During winter many motorists forget about their auto air conditioning because it isn't necessary to use it during those cold months. But did you know that using the air conditioning on the windscreen will clear any internal fogging very efficiently, and having the heater on at the same time stops you getting cold as well.
 
Tip 2: Using the auto air conditioner as noted above will also help to alleviate any need to re-gas the system. Why? Because an auto air conditioner compressor uses a seal on the drive shaft to keep the refrigerant from escaping. This seal works with the help of a thin film of oil, during winter the non use of the air conditioner allows the oil to dry up thus letting the refrigerant escape. The unknowing driver does not find out their system isn't functioning till summer arrives. Run your car air conditioner once every 2 weeks for a few minutes and you will have no problems or use it to defrost and defog your windscreen during winter.
#3493 of 3757
Re: How to prepare a car to sit for months this winter? [jogousa] by gagrice
Oct 16, 2009 (5:43 pm)
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Replying to: jogousa (Oct 16, 2009 4:54 pm)

I think most vehicles with climate control use the AC all the time. At least my last two vehicles showed the AC light on anytime I used climate control to keep a constant temp. It makes sense that running it would protect the seals.
#3494 of 3757
Re: How to prepare a car to sit for months this winter? [jogousa] by bpeebles
Oct 18, 2009 (11:04 am)
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Replying to: jogousa (Oct 16, 2009 1:58 am)

I agree with most of what you have said.... EXCEPT the "run the engine once a week"
 
This is a big NO NO during storage. Once an engine is prepared for storage, LEAVE IT. Just idling once a week is ASKING for condensation to build up in the crankcase. This can form acid which causes metal corrosion.
 
If it *has* to be run, DRIVE it until HOT for at least 30 minutes. If you have the vehicle up on blocks (to protect the tires from flat-spots)... driving it may be a hassle.
 
As a real-world example...
People who drive short commutes will tell you that their exhaust pipes rust thru every couple years. This is because of the condensation/acid/corrosion issue I mention above. Folks that drive long commutes may never-EVER have to replace an exhaust system because the heat keeps things clean.
 
As for additional comments on storage.... DONT FORGET TO CHARGE THE BATTERY. It is best to hook it up to a battery-maintainer which will monitor the battery and recharge as needed. (Schumacher battery maintainer at walmart around $20.)
#3495 of 3757
Re: How to prepare a car to sit for months this winter? [bpeebles] by Mr_Shiftright HOST
Oct 18, 2009 (11:25 am)
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Replying to: bpeebles (Oct 18, 2009 11:04 am)

I agree...just add some fuel conditioner, install a battery-maintainer, and forget about the car after that until you return.
#3496 of 3757
Re: How to prepare a car to sit for months this winter? [bpeebles] by jogousa
Oct 18, 2009 (12:15 pm)
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Replying to: bpeebles (Oct 18, 2009 11:04 am)

Well, does this apply to diesel exhaust as well? I am not so sure as I don't see any condensation from the exhaust when I start my Tdi as oppose to starting a gasoline car and the condensation resulting from gas exhaust going through a catalytic converter. Anybody out there who had an issue with corrosion of their diesel exhaust pipes?
In the aviation application (R-22 helicopter, for example) that is exactly what is recommended when the ship is not being used in winter. Start and run it once per week for a few minutes.
#3497 of 3757
Re: How to prepare a car to sit for months this winter? [jogousa] by british_rover
Oct 18, 2009 (12:50 pm)
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Replying to: jogousa (Oct 18, 2009 12:15 pm)

A turbine engine is very different from a regular reciprocating internal combustion engine assuming a R-22 uses a jet turbine motor.
 
A diesel engine is going to act the same way as far as condensation building up in the crank case.
#3498 of 3757
Re: How to prepare a car to sit for months this winter? [british_rover] by Mr_Shiftright HOST
Oct 18, 2009 (2:14 pm)
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Replying to: british_rover (Oct 18, 2009 12:50 pm)

I'd also worry about fuel dilution if you start up an engine and run it briefly and repeatedly. Not quite sure how fuel dilution relates to various diesel injection systems vis a vis gas engines but I would think any cold start fuel/air mixture would be rich.
#3499 of 3757
Re: How to prepare a car to sit for months this winter? [british_rover] by jogousa
Oct 18, 2009 (4:26 pm)
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Replying to: british_rover (Oct 18, 2009 12:50 pm)

Well, that makes sense - did not think about the condensation up in the crank case although I have read somewhere that some people spray inside the crank case with some special mixture just for this purpose to avoid the possible rust build up.
Good advice though...never had that problem and in my opinion it's always better to drive it at least once a week for a while if there is someone to do it. Main issue would be a battery drain because many newer cars have all kinds of things (e.g. alarm ) running and possibly draining the battery when the car is just parked and not used.
 
By the way, R-22 doesn't have a turbine motor (none of the Robinsons do) it just a plain 6 cylinder aviation engine.

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