RaleighNC

I seem to be using more gas lately, now that the weather is getting colder.

Do any of you know if using the heater uses as much fuel as using the a/c??

Someone told me it did, but it doesn't make sense.

Anyone change their heppa filter yet??

TIA.

rockinTLS_RENAMED

It's possibly due to the oxygenated fuels used during the winter. How much lower is your mileage? Oxygenated fuels or RFG's can account from 0% to sometimes 15% loss in economy over the winter months.

I haven't refilled the TL's tank lately, but the other vehicles are feeling it.

RFG's are mandated in our area between November 1 and February 28.

EPA logic: Increase oxygen content in fuel for environment = decreased engine efficiency = more fuel used = increased contaminents in environment.

spiroh

I wonder if thats better or worse for performance.

moomaster_99

My MPG has actually improved.. Then again my car is in the shop waiting for a tranny and I'm driving a Saturn...

rockinTLS_RENAMED

Unfortunately, worse.

RaleighNC

Thanks guys!!

I guess the heater/gas mileage is b.s.

I losing between 50~60 miles per tank.

rockinTLS_RENAMED

The heater alone will not hurt your mileage. The A/C compressor does create drag on the motor and will reduce mileage and it comes on when you use the defroster.

What oil do you use? Thicker than 5W-30 will also hurt power and mileage. Oddly, the TLS uses 5W-20 vs. the 5W-30 I have heard is used on the CLS.

Infamuz

Yea same here in Jersey, when I goto my fav gas station, there is a sticker stating, from November 7th to February 28th, the gasoline pumped from this dispenser will be oxygenated. Ive been loosing gas milage. But oh wells, its for only 4 months. I dont drive during the winter anyways.