Safe prolonged RPM for the E60
09-28-2009, 12:13 PM
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Originally Posted by Krozi' post='1019333' date='Sep 28 2009, 01:11 PM
Stop and go traffic and low RPM's causes carbon build up in the engine. The occasional beating get's rid of the deposits.
Whenever I'm at traffic light(first in line) or ramp I instantly think "Is it time for get rid of carbon builds up?
Then my wife's yelling at me "You just did it 30seconds ago!!" Then I reply, "there must be a nasty carbon built up in those 30seconds
and I must get rid of it!!"
OK, I had enough. Let's continue the discussion.
09-28-2009, 12:59 PM
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Originally Posted by swajames' post='1019322' date='Sep 28 2009, 12:04 PM
I think the main benefit of running at a slightly higher RPM on the highway is just to increase engine responsiveness in the event you needed to accelerate quickly. Granted, you can kickdown or you can manually downshift, but neither gives the immediate response that you have when the engine is already running at the sweet spot in the powerband. Reductions in RPM aside, there's also the added benefit of the much nicer engine note, the car really sings when its getting into the upper reaches of the powerband and that's something you can't quite enjoy when the engine is running at 2000 RPM! The one other benefit, as counter-intuitive as it may seem, is that I believe that the car does benefit from the occasional "Italian tune-up" when it really gets to stretch its legs. Plenty of owners on the Porsche forums seem to think the same way, there does seem to be a pattern in that the "garage queens" sometimes seem to need more maintenance compared to those that get the benefit of an occasional hammering.
But the original question was running on the highway for long periods of time at a higher RPM (i.e. driving in 3rd gear at 3000 RPM instead of 4th gear at 2000 RPM). That is the part I don't get.
09-28-2009, 01:42 PM
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Originally Posted by yezero' post='1019163' date='Sep 28 2009, 03:59 PM
Just say for example, driving on the highway/cruising using the Sports mode, I like to keep the car around about 3000 RPM at the respective speed.
i.e. at 66km/h, I will be in 3rd Gear (around about 3000RPM). Whereas if I was in Automode at the same speed, RPM is about 2000 (4th Gear).
So are there any negatives for prolonged driving/crusing at over 3000 RPM?
i.e. at 66km/h, I will be in 3rd Gear (around about 3000RPM). Whereas if I was in Automode at the same speed, RPM is about 2000 (4th Gear).
So are there any negatives for prolonged driving/crusing at over 3000 RPM?
That?s the speed the old ppl over there drive their car. Bmw 5 series are specifically designed for long trips on motor speedways.I can?t back it up but I can remember reading an article stating that too Low RPM's actually generate more strain on the engine. Of course that does not mean you should always drive at 6k RPM. I think a RPM between 2,5 k and 5 k RPM keeps your engine fresh. Drive once a week in DS mode and it should be OK.
Always change your oil on time with Castrol and use premium gasoline or diesel. Keep an eye on the air-filter and spark plugs. A well maintained car will have lower carbon emissions and harmful deposits inside your engine.
09-28-2009, 01:59 PM
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Originally Posted by Krozi' post='1019333' date='Sep 28 2009, 12:11 PM
Stop and go traffic and low RPM's causes carbon build up in the engine. The occasional beating get's rid of the deposits.
Occasional? Pffft, daily beatings
09-28-2009, 04:54 PM
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Originally Posted by webwysard' post='1019656' date='Sep 28 2009, 05:39 PM
and what about diesel cars ?
09-28-2009, 07:06 PM
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OMG!!!! I'm averaging around 2,000 rpm or less! 
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