328d coolant temperature

agentorange · 11-26-2018, 04:33 PM

Anybody on here with a 328d AKA 320d in Europe? Does it take a while for the coolant temp to come up on cold morning driving a steady pace on surface streets? It sure does on my wife's car. In 45°F weather (about 7°C for my metric readers) the temparature gauge is not up to halfway after 10 minutes of 45 mph driving on a bunch of surface streets tha tslope downhill. O know the engine is under very low load because the instantaneous mileage reads 65 mpg or more much of the time. Is this just a diesel thing, or has my thermostat stuck open.

BTW, we are getting 36-39 mpg in mixed driving around Las Vegas.

Billfitz · 11-26-2018, 04:43 PM

Do you have a coolant temperature gauge or oil temperature gauge? Gas engines have oil temperature gauges. Oil takes longer to come up to operating temperature than coolant, because unlike coolant you can't stop the flow of oil in the engine to make it come up to temperature faster.

agentorange · 11-26-2018, 04:48 PM

Quote:

Originally Posted by Billfitz

Do you have a coolant temperature gauge or oil temperature gauge? Gas engines have oil temperature gauges. Oil takes longer to come up to operating temperature than coolant, because unlike coolant you can't stop the flow of oil in the engine to make it come up to temperature faster.

I'm pretty sure it's a coolant gauge, but I'll look again tonight.

HighlandPete · 11-26-2018, 05:11 PM

Quote:

Originally Posted by agentorange

I'm pretty sure it's a coolant gauge, but I'll look again tonight.

European diesel models have oil temperature gauges. So yes, is slow to warm, particularly as the ambient temperature drops.

FaRKle! · 11-27-2018, 12:45 PM

Quote:

Originally Posted by agentorange

Anybody on here with a 328d AKA 320d in Europe? Does it take a while for the coolant temp to come up on cold morning driving a steady pace on surface streets? It sure does on my wife's car. In 45°F weather (about 7°C for my metric readers) the temparature gauge is not up to halfway after 10 minutes of 45 mph driving on a bunch of surface streets tha tslope downhill. O know the engine is under very low load because the instantaneous mileage reads 65 mpg or more much of the time. Is this just a diesel thing, or has my thermostat stuck open.

BTW, we are getting 36-39 mpg in mixed driving around Las Vegas.

We have an oil temp gauge, not coolant temp. The coolant temp warms up much quicker than the oil temp. One of my Torque Pro instrument readouts is coolant temp.

DonJuan · 11-27-2018, 01:46 PM

Quote:

Originally Posted by agentorange

I'm pretty sure it's a coolant gauge, but I'll look again tonight.

It should be oil temperature in all F30's. It does take longer to warm up, plus diesel engines run cooler than gassers.

I get 35 MPG city and 45 highway, and it pulls like a mad horse, I love this thing.

agentorange · 11-28-2018, 05:07 PM

Thanks, guys.

My wife drives ours much of the time has has not got worse than 36 mpg. It easily beats 45 mpg on the highway with judicious use of the cruise control and NHP looking over my shoulder.

DonJuan · 11-29-2018, 08:25 AM

Off topic but I just averaged 50+ MPG on my trip to work this morning.

11-26-2018, 04:33 PM	#1
agentorange Major 1508 Rep 1,387 Posts Drives: 328d Join Date: Nov 2018 Location: Desert SW iTrader: (0)	328d coolant temperature Anybody on here with a 328d AKA 320d in Europe? Does it take a while for the coolant temp to come up on cold morning driving a steady pace on surface streets? It sure does on my wife's car. In 45°F weather (about 7°C for my metric readers) the temparature gauge is not up to halfway after 10 minutes of 45 mph driving on a bunch of surface streets tha tslope downhill. O know the engine is under very low load because the instantaneous mileage reads 65 mpg or more much of the time. Is this just a diesel thing, or has my thermostat stuck open. BTW, we are getting 36-39 mpg in mixed driving around Las Vegas.
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11-26-2018, 04:43 PM	#2
Billfitz Lieutenant General 8264 Rep 16,114 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	Do you have a coolant temperature gauge or oil temperature gauge? Gas engines have oil temperature gauges. Oil takes longer to come up to operating temperature than coolant, because unlike coolant you can't stop the flow of oil in the engine to make it come up to temperature faster.
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11-28-2018, 05:07 PM	#7
agentorange Major 1508 Rep 1,387 Posts Drives: 328d Join Date: Nov 2018 Location: Desert SW iTrader: (0)	Thanks, guys. My wife drives ours much of the time has has not got worse than 36 mpg. It easily beats 45 mpg on the highway with judicious use of the cruise control and NHP looking over my shoulder.
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11-29-2018, 08:25 AM	#8
DonJuan Lieutenant 538 Rep 518 Posts Drives: G82 M4, F15 X5, F30 328d, E30 Join Date: Nov 2018 Location: N.Miss / Memphis, TN iTrader: (0)	Off topic but I just averaged 50+ MPG on my trip to work this morning. Attached Images __________________ 2022///M4 Competition BSM / Fiona Red. 2023 X7 xDrive40i, BSM / Individual Ivory white/Atlas Gray over Piano Black MSport Pro and Prof.
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