Isuzu Trooper Owners Club UK™

[darren m]

Isuzu trooper 3.1 TD 189,000 miles , usually starts 1st time every time , BUT this morning it was quite cold and frosted up , it took at least 3 attempts to start .
next , i dove it slowly off the drive down to the main road and set off on journey , where i would normally excelerate up to around 60 mph , the car seemed to struggle and was quite noisey from the engine as if it was struggleing .
After a while it seemed ok ( approx 10 miles ).
what would cause this could it be the oil temp as it was v.cold and the oil pressure was bit higher than usual at around 55-65 psi, normally runs at around 30 psi at 2 1/2 ,000 rpm.
Do i have an oil pressure problem or is it the oil thickness etc .
Also which oil should i be putting in to it ( viscosity ) and what is the difference between semi and fully synthectic , which is best for this engine.

thanks for your help .
Darren .

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[dab]

[darren m]

Any one else advise on this .
which way around does the oil pressure gauge work ie. if it cold outside will the gauge be reading lower or higher oil pressure in the engine on first starting of the engine
reason i ask is i noticed the oil pressure is high , between the 55 and 110 mark on my gauge ( PSI i think ) , when the out side temp is cold .

thanks

[dab]