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Ask Mobil Archive -
General Engine Info
DateQuestionAnswer
06/15/2009
Keeping Oil Pressure Up in a Chevy Truck
My daughter has a '98 Chevy 4x4 truck with 127,000 miles on it. After the oil gets hot, the oil pressure drops to around 20 lbs. She runs 5W-30. Short of rebuilding the engine, would it help to run hi...
It is not unusual for a higher mileage vehicle to run at lower oil pressure and this alone should not be of any concern. This is primarily due to larger clearances due to normal wear and tear. We reco...
05/29/2009
Why Have Multiple 30 Grade Motor Oils if the Protection Level is the Same
I see you stated your Mobil 1 0W-30 wt oil offers the same protection as your 5W-30 and 10W-30 oils. If so, why in the world would you continue to make the 5W-30 and 10W-30 oils when one could have mu...
You are on the right track which is why oil recommendations are getting lighter and lighter. But first give credit to the OEM’s (original equipment manufacturers) who over the years have produced bett...
04/29/2009
Will Using 0W-20 Oil Cause Lifter Ticking in a Scion xB?
I have a 2009 Scion xB which can use 0W-20 or 5W-20 weight oil. I would like to use the 0W-20; however, I am concerned that if I use the 0W-20 weight oil, it may cause the lifter to tick. I have had p...
The 0W-20 may provide you an edge in fuel economy. If you have a finely tuned ear you may hear lifter tick on start-up which would quickly disappear. We recommend you give the 0W-20 a try and see what...
12/08/2008
Which Oil is Best for LPG Engines?
What engine oil do you recommend for LPG engines that are based on automotive gasoline engines to minimize valve and combustion chamber deposits?
Any high quality ILSAC GF-5 engine oil will provide excellent protection in a LPG (liquefied petroleum gas) type engine. For the best protection against deposits we would recommend Mobil 1 synthetic o...
11/20/2008
Engine Races When Foot Off Gas Pedal
Why does my car engine race when my foot is not on the gas pedal?
Idle speed is what most likely needs to be adjusted. In newer vehicles this may be difficult to adjust and may require a visit to your dealer or local mechanic.
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