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Ask Mobil Archive -
General Conventional Motor Oil Info
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...
12/23/2007
Phosphorous Levels of Mobil Conventional Oils
You have a nice table that summarizes the Phosphorus content of all of the Mobil 1 synthetic oils. Please add a page or two to that table that gives the Phosphorus numbers for the regular Mobil oil, s...
In general all the mineral products are formulated to the latest ILSAC /API specifications, so that the typical phosphorus for all these products is 800 ppm. Unfortunately to get the higher levels of ...
11/22/2006
Any Problem Having Residual Conventional Oil in the Engine When Switching to Synthetic?
When switching from petroleum-based motor oil to synthetic is there a concern regarding the co-mingling of residual organic-based oil with the new synthetic oil and if so what are the risks?
There should be no concerns with switching your motor oil from conventional to Mobil 1 or Mobil 1 Extended Performance. No special preparation is necessary. Mobil 1 is compatible with conventional oil...
08/20/2006
Will Mobil 1 Reduce Exhaust Smoke in Older Mileage Vehicles
Can synthetic oil such as Mobil 1 reduce or eliminate exhaust smoke from a high mileage/worn automobile gasoline engine?
Yes, exhaust smoke that is visible after the engine has had a chance to warm up can often be due to engine oil that is burned during the combustion process (a tell-tale sign of this is a blue tinge to...
06/06/2006
Do Oil Stabilizers Make Conventional Oil Equal to Synthetics
I recently replaced the engine in my 1991 GMC Jimmy S15 and was considering using conventional motor oil with Lucas Oil oil stabilizer added to it. Would I accomplish the same thing by using Mobil 1 o...
Mobil 1 fully synthetic motor oil exceeds the industry’s toughest standards and outperforms all conventional oils. We do not recommend adding engine oil additives to any lubricant. The additives in an...
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