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Ask Mobil Archive -
Switching to Conventional from Synthetic
DateQuestionAnswer
04/06/2009
What Will Happen Switching From Synthetic Motor Oil to Conventional Oil
I have been in the mechanic business for 8 years and was always taught that you cannot go back to conventional oil from synthetic oil. I have seen the damage caused by going back to conventional. Is i...
Synthetic oils will provide better protection than conventional oils, but switching back and forth between full synthetic and conventional oil will not damage the engine. Of course, this depends on th...
01/06/2009
Pros and Cons of Putting Synthetic Motor Oil in a Ford Model A
I have an antique 1929 Model A Ford. I'm trying to be as nice as I can to the old girl. Would there be any advantage or disadvantages to using a synthetic motor oil in this vehicle? Right now I am usi...
We assume this is a relatively low mile vehicle. As such using full synthetic oil may not be cost effective. As you already know, there are many advantages to using Mobil 1 in a vehicle but we are not...
09/26/2008
Does Valve Train Noise Increase When Synthetic Motor Oil Is Used?
I notice that with synthetic oil I have more valve train noise. I switched back to conventional for a change and the noise was indeed reduced. Is it fair to attribute this change to synthetics vs conv...
If you are comparing the same viscosity, then we would not expect additional noise in the valve train when using a synthetic product.
07/17/2007
Did Switching from Synthetic to Conventional Oil Contribute to Engine Stalling and Hard Starts?
Does switching from synthetic oil back to conventional oil cause any engine problems? I switched my last used car to a high-mileage synthetic when I got it and it ran fine. But one of the next times I...
It is unlikely that your problem as described was oil related. Certainly hard starting/cranking in cold weather could be impacted by using switching oils especially if they were different viscosities....
5/1/2004
Switching From Conventional Motor Oil to Mobil 1
There seems to be confusion about how to make the switch from conventional motor to synthetic. I am a do-it-yourselfer. Could you provide instructions?
The instructions are very easy to follow: Simply change the oil as you would normally. Any “confusion” is just myth. You can switch from conventional motor oil to Mobil 1 synthetic (and back again, if...
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