tag:blogger.com,1999:blog-8472211903033725545.post2762425131305858433..comments2024-01-12T12:52:08.097-07:00Comments on Billlls Idle Mind: Jaguar XK-8 Road ReportBillllhttp://www.blogger.com/profile/13913354887560267235noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-8472211903033725545.post-33244910170912147532014-02-28T17:20:29.753-07:002014-02-28T17:20:29.753-07:00Regarding #3, most European cars have heater contr...Regarding #3, most European cars have heater control valves or pumps that only let heated coolant into the heater core when heat is demanded. BMWs since the early '80s have a thermostatic valve in front of the firewall that controls coolant flow to the heater. When you're starting a cold engine you want it to come up to temperature quickly for emissions reasons so modern BMWs have an electric pump that does not circulate coolant to the radiator until the engine temp reaches a set point, the pump supplying the heater core is programmed similarly.<br /><br /> In the summer you don't want to pump hot coolant into the air mixing box, that would just make the air conditioner work harder reducing available power and fuel efficiency. <br /><br />More and more cars are using electric motors to move coolant, pressurize the brake fluid or steer the car. Compared to constantly turning a pump using an electric pump only when needed saves fuel, particularly in highway driving.<br /><br />Al_in_OttawaAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-8472211903033725545.post-35410140102454637542014-02-28T16:51:30.834-07:002014-02-28T16:51:30.834-07:00The government thinks you can, so "premium&qu...The government thinks you can, so "premium" around here is 91 octane. What we used to call "regular" back in the day.Billllhttps://www.blogger.com/profile/13913354887560267235noreply@blogger.comtag:blogger.com,1999:blog-8472211903033725545.post-31293292362026681252014-02-28T14:58:27.330-07:002014-02-28T14:58:27.330-07:00"even with premium gas."
I thought that..."even with premium gas."<br /><br />I thought that at Colorado's elevations, you could get away with using a lower-octane fuel.Anonymousnoreply@blogger.com