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Old 06-08-2017, 12:52 PM   #5 (permalink)
EcoModding Lurker
Join Date: Jan 2009
Location: Melbourne, Australia
Posts: 18

hatch - '05 Volkswagen Golf Mk.V
90 day: 33.42 mpg (US)
Thanks: 11
Thanked 4 Times in 3 Posts
Yeah, I figured Chop's temperature swing would be much bigger than mine. It's very temperate here. Winds are fairly similar (low) and the suburban roads I drive are fairly sheltered from wind by trees and structures.

Relatively low speeds I guess. I'm mostly on the road when there's little traffic, so I stay pretty close to the 50-60k/30-40mph limits.


Did some thinking, perhaps it's the PCV Valve itself. Would that match the load-dependent economy changes?

The oil-cap-off test has no impact on idle, which I think is bad. It's integrated into the engine head cover, so I can't test directly.
Unfortunately it's not listed or noted in the official VAG service manual for my engine, and the VW parts diagram doesn't list it as a part either.

Last edited by ballo; 06-08-2017 at 01:00 PM..
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