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Eastern USA Local discussions for those in the Eastern USA. (Vermont, New Hampshire, Massachusetts, Maine, Washington, DC. New York, New Jersey, Connecticut, Rhode Island, Delaware, Maryland, Pennsylvania, Virginia, West Virginia)

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Old January 15th, 2019, 07:48   #1
ttcheung
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Fuel Economy: 40mpg
Default In NE, do you block your grille during winter?

Anybody in the Massachusetts area block their grilles during the winter? If so, are the benefits noticeable? I commute about 60 miles daily and go up and down 495; my water never seems to reach the midpoint, even when going ~80mph.



If you block your grilles, what foam diameters have you been using? Thank you.
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Old January 15th, 2019, 08:16   #2
KITEWAGON
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Yes I do. I don't know if its noticeable because I put it on before it was very cold out. I didn't do a scientific test. I use the IDparts winter cover. Fits nice. Looks good. My car gets to full temperature (actual 190-200 F using my P3 gauge, not going by built in dial) within about 7-8 miles or so.

If your car is never hitting temp you may have something else going on.
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Old January 15th, 2019, 10:46   #3
ttcheung
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In slightly warmer temps (40s-50s) the needle will go to the mid point. 495 also has some inclines and declines, and I'm sure coasting cools the temps a lot. During regen mode that temp needle will climb to the middle as well. Therefore I hope my powertrain's alright.


People have been talking about fuel economy improvements; is it from the aerodynamics?, or from quicker warm-up times?
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Old January 21st, 2019, 16:26   #4
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you may need a new thermostat.
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Old January 22nd, 2019, 16:33   #5
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Yes. Lower Grille.

Around 165 actual coolant temp will indicate 190 on the dummy gauge.

Last edited by Matt927; January 22nd, 2019 at 18:16.
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Old January 22nd, 2019, 19:29   #6
Fahrvegnugen
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Yes I use 1/2 inch dark grey pipe insulation and it helps keep the engine bay warm. Cruising on the highway without it I sometimes can drive long distances without being at operating temp. You just have to take it off once itís above freezing.

http://forums.tdiclub.com/showthread.php?t=160835
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Old January 22nd, 2019, 21:35   #7
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For a while I had a very consistent commute, 14 miles one way, 50 MPh, one stop light, and never any traffic of any sort. with temps typically in the single digits in the am and teens to mid 20's in the pm my winter front and intercooler cover gained me 2 MPG, PLUS the car warmed up in about half the time. I drove the commute as consistently a possible, on the cruise at 50 the whole time except for a few corners that I had to slow for.
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Old January 23rd, 2019, 07:42   #8
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I commute about 1-1/2 hours down the PA turnpike, and yes I block the grill with the 1/2" pipe insulation jammed in every place I can jam it in. The difference is noticeable with quicker heat up times. As you probably should know starting the TDI up and letting it idle in an effort to heat up the car is useless, but the car now will heat up pretty well within a few miles of driving when without the grill blockage, sometimes like the other day when it was 5 degrees outside the temp may never get to the operating temp. You also get better winter mileage.
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Old January 24th, 2019, 14:02   #9
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Western Mass here, commute to Hartford. I also block lower grill only with foam pipe insulation. Full engine temp reached 2-5min sooner depending on outside temp.
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Old January 27th, 2019, 13:09   #10
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Pipe insulation isn't usually noticeable unless you point it out to someone. It holds in place, it is easily replaceable if lost or damaged, low cost - what's not to like?

I've left mine in place until I started to wonder on 70+ degree days if I would overheat, but I never have. Maybe on a day that warm if your fans failed it would, but if everything works, no problem. (Not that I recommend leaving it in there that long!)

Cheers,

PH
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Old January 28th, 2019, 21:23   #11
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So "this guy I know" had his rad blocked on his 06 Jetta last year. This car doesn't get used every day so things can get forgotten. So "this guy" took the Jetta on a trip to Jersey on the interstate. On the way back the temps are starting to get into the high 80's and the speeds are almost that high. He starts to wonder if he every unblocked the rad so he pulls over to check and sure enough it's all blocked off. Switched from A/C on to windows down and heat on high for the rest of the trip with no issues.
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Old February 7th, 2019, 14:46   #12
ttcheung
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I bought some pipe insulation from the local hardware store and stuffed the lower grille with them. I didn't do a perfect job, so there's small openings on each end.


The warmup times definitely improve, and with temps either in the 20-30s, the needle rarely hits midpoint, unless I drive her harder, or that it's in regen mode.


I hate how the car's caked with salt.
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