Quote:
Originally Posted by 08crd
I had a local garage service the car, he ordered the oil and parts from Repco and was half the price of Jeep.
The guy knows his stuff, I quizzed him on the oil and filters and he did use 5W/40 instead of 5W/30.
When it comes to a major service, I will have to check out what it entails, but realistically I can't see why a decent mechanic can't carry it out if they have the parts.
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He probably used 5w-40 instead of 5w-30 because it is cheaper to buy.
5w-30 is often recommended by makers inmost newer makes because it improves fuel consumption and reduces emissions compared to the thicker oils of old.
They usually specify the light oils but allow the use of one or 2 grades heavier oils as an alternative.
I know it makes a measurable difference in real world driving as I too have occasionally used 10w-40 in lieu of recommended 10w-30 in my wife's cars and the average fuel consumption according to the vehicles trip meter climbs to 8.2L/100KM from the long term average of 8.1L/100km. Invariably when I return to 10w-30 at the next service it reverts to the long term average after a couple of weeks.
