Older vehicles and this cold weather...

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All of our vehicles stay in the garage at night.
Do use the remote start to get the seats, etc warmed up.
If by chance it’s a start and go, we have noticed something odd.
My 7.3 liter V8 gasser F-250 is putting out very warm air a mile from our home on a country road with no stops and a 55 mph speed limit. Just about a two minute drive.
Our 4 cylinder Hyundai takes twice that distance to even start putting out slightly warm air.
It would seem that the V8 would take longer to come to temperature than a 4 banger?
 
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All of our vehicles stay in the garage at night.
Do use the remote start to get the seats, etc warmed up.
If by chance it’s a start and go, we have noticed something odd.
My 7.3 liter V8 gasser F-250 is putting out very warm air a mile from our home on a country road with no stops and a 55 mph speed limit. Just about a two minute drive.
Our 4 cylinder Hyundai takes twice that distance to even start putting out slightly warm air.
It would seem that the V8 would take longer to come to temperature than a 4 banger?


I have the 6.8 v10 in my work truck and that sucker will start heating within a few minutes.

I've always been very impressed with how fast I get heat in there. Much faster than my chevy truck or even the wife's smaller suv.
.
 

SoonerP226

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I have a 2024 Corolla hybrid and I went out to start it after not driving it for two weeks and it was a no go. Dash lights flickered and looked odd. I put the battery charger on it for 30 minutes and it started right up. I'm taking it to the dealer, under 3,000 miles and something is definitely wrong here. Battery, alternator or...
…or you let it sit for two weeks. Modern cars have electronics that never completely shut down, and if you let the car sit long enough, they’ll drain the battery below the voltage the car needs to start. Two weeks is more than enough time for the car to drain the 12V battery to below 12V.

When I had the Rona, I didn’t leave the apartment for the better part of three weeks. The first time I did, my brother came to take me out for a ride in my truck, but those three weeks had seen it sitting too long, so it had to suffer the indignity of getting a jump start from a Prius. After I got back into the swing of things and started driving regularly, it didn’t need another jump start until the battery finally reached the end of the trail.
 

Nate08chevy

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Two weeks is more than enough time for the car to drain the 12V battery to below 12V.
Not saying you’re wrong about new electronics not turning off, but that seems like a parasitic drain to me. 2 weeks should be no problem for a 1 year old battery with 3k miles.

There was a post, I think on here, about “illegal” dealer installed GPS devices draining batteries 🤔
 
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They don't call them combustion engines for nothing. Combustion makes heat. Screw the friction.

The more cylinders the more combustion. The more combustion the more heat.
More cylinders = more friction. The effect of internal combustion heating is minimal. If it was the primary you'd melt holes in pistons and cylinders and melt valves. Decades back I thought that, my Dad an engineer with the big three set me straight. As for exhaust heating you are 100% correct. Back in the 70's one of the largest problem auto manufactures had were overheating of Catalytic converters (at least Ford did.)

This is one of the reasons new motors heat up faster than older motors, tighter tolerances = more friction in most cases.
 
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Most of the friction in an internal combustion engine comes from the piston rings. That’s why modern engines have thin low tension ring packs to reduce friction which improves fuel economy. The piston rings are also the primary path of heat transfer from fuel combustion to the engine. Multi-viscosity engine oil means the oil will actually get thicker as the engine reaches operating temperature. Engine start up is where most of the wear happens, so lower oil viscosity helps the oil flow better. (Back before multi-viscosity oils, you ran one viscosity in the winter and a different one in the summer) A lot of newer cars run lean air-fuel mixtures at startup to meet fuel economy standards which also means the engine doesn’t warm up as quickly. That’s been a problem for several car makers because it’s lead to premature engine failure from fuel-oil dilution, I think a few made updates to increase the air-fuel mixture to warm the engine up quicker and to delay the cabin from warming up as quickly to retain more heat for the engine reach full temps.
 

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