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MG MGF Technical - oil temp rising with 10W40 oil

I own a MGF mpi of 98,
first 1 changed the air filter with a K&N 57i kit (great sound and smoother driving), after this modification the oil temp was normal (almost 120 degrees) during normal driving.

a few days later the dealer changed the 'normal' oil with synthetic 10W40 Castrol GTX. And now the oiltemp is increased with 10 degrees.

Is this normal? the sensor is ok.


Allard de Graaf

120 degrees at normal driving ! Mine is quite steady at 90 degrees
Gaff

I think I have the same small increase seen when I changed to 10W40.
Though not sure cause the weather got warmer as well.

I get currently the 120°C at an average of 90 to 100 mph. Did a long ride today and a short distance of 25 miles on the motorway with 125mph and read 135°.
http://www.mgfcar.de/instruments/oil_135_0249.jpg --> is I think 135° ;)

Ambient temperature was about 17° C.
This is the max. average temperature I always do. My speedo is the oil gauge. Slow down if it gets 135°C. I did so with the old MGF and this also is the maximum I do with the current.
30k plus now 42k km without any engine problem.

Normally I have between 110 and 120 degrees in the summer and just 10 or 15 less in winter.

I need to add that the air inlet and outlet is a bit modified with a sport exhaust an short air inlet length to a big GM throttle body. K&N panel filter in the standard airfilter box.

All around I think 120 to 135 temperature readings or nothing to worry about at an MPI. Though I'll change back to full synthetic oil (5W30) as soon as I find time. Wanna see the difference.

Dieter
Dieter Koennecke

This thread was discussed between 24/05/2002 and 25/05/2002

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