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Thread: Planning to trade-in new CRV with CX-5

  1. #16
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    Quote Originally Posted by brillo54 View Post
    It really doesn't matter. Apples and oranges if you ask me. A 360 hp V-8 Hemi (IIRC) vs, a 186 hp 4-banger. Which do you think will generate more heat (and drink more fuel) and thus heat up more quickly?

    My oldest brother had a '66 GTO and on a cold day you'd have full heat a mile down the road (of course GTO stood for gas, tires and oil).
    Well...yeah. but that wasnt something he considered. 357hp my year. I liked that.

  2. #17
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    Planning to trade-in new CRV with CX-5

    I can tell you my VW and my ST I had previously would. And completely agree MUCH quicker driving (like 2-3 min maybe). On the GTI the heated seat isnít actually much faster and itís seats are faster than the Mazda. The reason? The exhaust manifold is integrated into the head and has a water jacket. So it extracts all that exhaust heat into the cooling system. Heating the cabin faster isnít the reason they do this but itís a side benefit.

    I thought Honda was doing this also with their turbos. I really donít understand why they have this heat issue. The oil issue I understand.

    What did they screw up?
    Last edited by jthj; 01-06-2019 at 10:13 AM.

  3. #18
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    Quote Originally Posted by 7eregrine View Post
    Maybe I'm wrong but don't ALL cars take much longer to warm up idling in a driveway vs 10 minutes at speed? Isn't this exactly why a lot of people think warning your car up idling in your driveway is just dumb and does nothing but wear and tear?
    Let me tell you how many $30,000 cars are going to be blowing 70 degrees in just 10 minutes of icing in your driveway: 0.
    My $42,000 Volvo doesn't.
    Having said that, I do idle my cars. And they both might start blowing a little warm air in those 10 when it's real cold... But 70? No.
    And they both blow hot air quicker after moving because of this... Significantly. But if you want a warm car in 10 idling minutes in your driveway you need to at least double your budget.
    Keep the CRV.
    Yes. Lots of data to show that driving the car warms up the car much faster than idling it. Not to mention that idling results in zero MPG and pollutes a ton more.

    https://www.fueleconomy.gov/feg/coldweather.shtml
    2014 Silver Mazda CX-5 GT
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  4. #19
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    2019 CX-5 GT 184 2.2 diesel auto - Sonic Silver

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    Forget comparing older cars with newer cars when it comes to warm up times. The more they improve thermal efficiency (how much of the energy created from combustion is useful rather than soaked up by the metal parts) the longer it takes to warm the engine. Theyíve added a radiator blind to the CX5s to help speed warm up times but it might still take longer than older tech engines. Diesels are highly thermally efficient and take ages to warm up. They have a second feature to help - a PTC electric heater which sits in the inlet to the heater. Itís a 1kw element that wonít kick out any heat as such but it takes the chill off in very cold weather.
    Attached Files Attached Files

  5. #20
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    The behavior makes me think the CX-5 has a PTC but I canít seem to find any documentation of it.

  6. #21
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    2019 CX-5 GT 184 2.2 diesel auto - Sonic Silver

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    Quote Originally Posted by jthj View Post
    The behavior makes me think the CX-5 has a PTC but I can*t seem to find any documentation of it.
    The PTC is only on diesels.

  7. #22
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    Quote Originally Posted by Unobtanium View Post
    Well, its gone now, so no way to prove one way or the other.
    What year was it? My bff has an older GC. Can be proved.

  8. #23
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    Quote Originally Posted by 7eregrine View Post
    What year was it? My bff has an older GC. Can be proved.
    2010, Limited, 5.7 HEMI and QDII

  9. #24
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    Quote Originally Posted by dougal View Post
    Yes. Lots of data to show that driving the car warms up the car much faster than idling it. Not to mention that idling results in zero MPG and pollutes a ton more.

    https://www.fueleconomy.gov/feg/coldweather.shtml
    ...and a cold idling engine is running very rich. The rich condition is washing lubricant off the cylinder walls and creating a high wear situation. I never let a cold engine idle for more then a few seconds after startup.

  10. #25
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    Yup letting it idle to warm up is definitely worse for the car. This is why Iím not a fan of remote start.

  11. #26
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    Quote Originally Posted by davefr View Post
    ...and a cold idling engine is running very rich. The rich condition is washing lubricant off the cylinder walls and creating a high wear situation. I never let a cold engine idle for more then a few seconds after startup.
    Yep, the only mention in the manual for warm up time says 10 seconds. Nothing else. So folks worried that idling is needed on cold days the horse's mouth says 10 seconds only.

    As far as the CRV goes, it comes with remote start standard. This is why quite a few CRV owners complain it does not warm up at all while idling. However, the heat issues some CRV owners speak of know they need to drive to warm up the car, but it just doesn't warm up (unless at highway speeds). That's a completely different problem than warming up once driving.

    My experience with the CX5 is the coolant takes a while to get to 210į F on very cold days but so has all of my previous 4 bangers. Even my wife's 17 Sienna that's a V6 takes just as long for the coolant to get to temp. The big difference is that it blowing nice and warm air well before the coolant gets to temp. The CRV with the heating issues don't.

  12. #27
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    And thatís a good callout. People in this forum like to get really pedantic. I think the OP definitely is just meaning warmed up as in I get warm air from the vents. Not the coolant and oil are at their ideal operating temperature.

    And honestly thatís what most normal people mean by ďwarmed upĒ.

  13. #28
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    Quote Originally Posted by davefr View Post
    ...and a cold idling engine is running very rich. The rich condition is washing lubricant off the cylinder walls and creating a high wear situation. I never let a cold engine idle for more then a few seconds after startup.
    I really don't think so. Not in modern EFI/DI engines.

  14. #29
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    Quote Originally Posted by Unobtanium View Post
    I really don't think so. Not in modern EFI/DI engines.
    I agree with this. When the car is started in cold weather, the idle is high as well as the oil pressure. It is best to let it warm up at least until the idle drops down. I let mine idle for about two minutes in cold weather, at least until it is thoroughly broken in.

  15. #30
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    Itís definitely running a richer afr cold. Not so drastically as in the past though.

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