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- Aug 19, 2010
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Hi.
The recent spec change for the Fire engine to a C5 0W-20 oil made me wonder as to why the change just prior to the demise of the fire engine.
Even though the new oil is thinner it has higher stress levels and less likely to break down under extreme load. It also has higher lubricity than the previous recommend C3 oil. I read numerous articles on oils and those two points made me decide to give it a go.
Cold it doesn't seem noticeably thinner than the 5W-40 C3. I thoroughly drained the old oil and fitted a new filter. Since I changed the oil three weeks ago I've not driven that far due to lock down but I drove to hospital one day and went a different way to give the car a run.
I'd say the engine feels more eager to rev it is just as smooth and quiet, there is no tappet noise on initial start up, there was always before for a few seconds even after two oil changes the last one done in January of this year.
One particular incline that I drive up every time I'm out with the new oil has improved the termination speed by 2mph. This remains to be seen if it is consistent, as the cross with its lower final drive ratio than the lounge, is quicker than the Lounge was.
So I'll now track the fuel consumption over the next few weeks and months. Certainly I have no qualms in using this oil. One other thing I have done was to really get it hot on my return from hospital, on the next start up a couple of days later there was no rattles or untoward noises that could have been caused by the oil draining from bearing surfaces.
The recent spec change for the Fire engine to a C5 0W-20 oil made me wonder as to why the change just prior to the demise of the fire engine.
Even though the new oil is thinner it has higher stress levels and less likely to break down under extreme load. It also has higher lubricity than the previous recommend C3 oil. I read numerous articles on oils and those two points made me decide to give it a go.
Cold it doesn't seem noticeably thinner than the 5W-40 C3. I thoroughly drained the old oil and fitted a new filter. Since I changed the oil three weeks ago I've not driven that far due to lock down but I drove to hospital one day and went a different way to give the car a run.
I'd say the engine feels more eager to rev it is just as smooth and quiet, there is no tappet noise on initial start up, there was always before for a few seconds even after two oil changes the last one done in January of this year.
One particular incline that I drive up every time I'm out with the new oil has improved the termination speed by 2mph. This remains to be seen if it is consistent, as the cross with its lower final drive ratio than the lounge, is quicker than the Lounge was.
So I'll now track the fuel consumption over the next few weeks and months. Certainly I have no qualms in using this oil. One other thing I have done was to really get it hot on my return from hospital, on the next start up a couple of days later there was no rattles or untoward noises that could have been caused by the oil draining from bearing surfaces.