Question:
Is it bad to rev engine in cold start with synthetic oil?
2009-12-10 18:09:40 UTC
I've been told that revving the engine is bad before the engine warms up because the oil does not have chance to warm up and flow...But my friend tells me that since I use Mobile One synthetic oil, its okay to just start driving right after i turn on my engine. Is this true?
Six answers:
?
2009-12-10 18:54:58 UTC
Logan is correct. Your engine doesn't need to be warm to drive. Just let it run for 30 seconds or so, then drive a little easy for a couple minutes. Synthetics will NOT protect you if you start the engine and immediately go to high revs.



Get in the car, start the engine, set your music, set the a/c or heat, buckle the seat belt and drive.



Rich
Edwin
2009-12-12 06:14:50 UTC
You use synthetic oil and that's a good start. But just synthetic oil won't save your engine in some cases. To tell you the truth, in cold starts engine oil does matter but it's usually the way your engine parts react to one another.



Explanation...When you first start your car up in the mornings, the hottest part in the engine is the cylinder head and the top of the pistons. This difference in temperature between the cylinder walls and piston create excess friction and revving the engine up during this crucial warm up period can literally burn up your piston rings creating massive damage. The rule hear is different metals have different heat up rates. Don't get me wrong you are somewhat protected with the use of a synthetic product but I wouldn't risk it. Any engine builder will tell you exactly how the car was driven by tell tale signs of wear in the engine cylinder walls.



I'll be truthful, I don't always wait for my car to warm up. Most of the time I'm running late in the mornings. But I do wait at least 1-2 minutes for oil to reach critical engine parts. Then I drive off slowly and don't try to rev too high. I also use synthetic in my truck.
larribee
2009-12-10 18:53:24 UTC
When the engine stops, the oil drains to the bottom of the oil pan. It takes a few seconds after it starts to pump oil thru the engine.

Your engine will last longer if you let it idle for a minute after a cold start, and drive it easy until it reaches normal operating temperature.
rah1420
2009-12-10 18:50:03 UTC
Check out "Bob is the Oil Guy" (BITOG for short) for everything you ever wanted to know about oils. Synthetics should be better than dino oils for driving off right away. Don't go nuts with the engine until it gets a little heat in it, however.
anthes
2016-11-13 06:14:30 UTC
The oil interior the sump is sucked into the oil pump, the oil pump forces the oil into the engine. the 1st place the oil is going is the main bearings of the engine, after the mains the oil then travels around something of the engine. In different words the main bearings produce the oil tension interior the comparable way that water in a hose pipe could be pressurized once you place your finger over the tip of the pipe. From the sound of what you have stated i've got faith that the main bearings on your engine are broken ensuing in the two the noise and the oil tension warning gentle drawing near. regrettably you will choose the two an entire engine re-build or a re-conditioned replace engine. Ja.
2009-12-10 18:22:00 UTC
its okay if you drive once you start your engine in the cold, if you excessively rev your engine in the cold you risk cracking the block, throwing a rod, and many other problems


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