I'd say the Thermostat is more than likely the Reason for the Temp Increase ~

(@Least it Should Be) ~

        My Recipe for New or Rebuilt H2OBxr BreakIn >

        For an H2OBoxerEng' ~

Conventional/Dino 5w30          ~       1st Hour ~ then drain it                        1000-3000RPM ~ Trying not to stay @ any 1 RPM for vary long

Conventional/Dino 5w30          ~       0 - 600 Miles ~ then drain it           Not over 4000RPM ~ Trying not to stay @ any 1 RPM for vary long

Conventional/Dino 5w30          ~       600 - 1200 Miles ~ then drain it                Not over 4000RPM ~ Trying not to stay @ any 1 RPM for vary long

Conventional/Dino 5w40          ~       1200 - 2000 Miles ~ then drain it              Not over 4200RPM ~ Trying not to stay @ any 1 RPM for vary long

Conventional/Dino 5w40          ~       2000 - 4000 Miles ~ then drain it              Not over 4400RPM ~ Trying not to stay @ any 1 RPM for vary long

Conventional/Dino 5w40          ~       4000 - 7000 Miles ~ then drain it              Not over 4600RPM ~ Trying not to stay @ any 1 RPM for vary long

Conventional/Dino 5w40          ~       7000 - 10000 Miles ~ then drain it      Not over 4800RPM ~ Trying not to stay @ any 1 RPM for vary long

FullSynthetic 0w40 or 5w40              ~       10000 - 14000 & every 4K after that until OilPressureGauge tells me I might want to think about a *w50

                                                        or an Eng'Rebuild

                                                                                        ORR ~ DeanB

On 1 Nov , 2018, at 10:45 AM, Dan N wrote:

> hi all,
> 
> I have a rebuilt WBX 2.1 engine in my van and it's running with the temp.
> needle a fraction over the red LED light. With the old engine the needle
> stays under the red LED light, the difference is a bit more than the
> diameter of the red LED light. I assume that the rebuilt engine run hotter
> because it has more friction, it's normal. The needle went down very little
> when I turn the heater ON.
> 
> so I have these questions:
> - how many miles for a proper breaking in period on a WBX 2.1? 3K? 6K? 9K?.
> Mine has about 2K miles as it today.
> - is it correct to assume that every engine of the same model/size runs
> with different temp and there's no set value for reference?
> - will it runs cooler after the breaking in period?
> 
> *note: the temp. sensor, thermostat are new. - I use 80� thermostat on the
> old engine and rebuilt engine has a 87� thermostat.*
> 
> thanks
> 
> dan