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Ask Mobil Archive -
Trucks
DateQuestionAnswer
01/12/2012
What Causes Moisture on the Oil Fill Cap?
Moisture under the oil filler cap; there are drops but it’s not creamy looking. This is from a 5.7 Dodge Ram 4x4 and my neighbor has the same engine in his truck with the same problem. Another friend ...
Without more detailed knowledge of your situation and vehicle operation, the most likely cause for this condensation is air humidity, which then condenses under the fill cap.  Water may be making its ...
10/25/2010
Will Switching to Mobil 1 Improve the Pressure in a Older Pickup?
I bought a 1982 GMC S10 with 65,000 actual miles that had been sitting for 9 years. After using Mobil 1, the oil got very dirty very fast. I fear the original owner never changed the oil. (It still ha...
We would certainly recommend giving Mobil 1 another try.  Mobil 1 is specially formulated with advanced cleaning additives to protect engine parts. It is entirely possible that Mobil 1 was doing what ...
08/22/2010
Is Mobil 1 Synthetic ATF Correct for a Toyota Tacoma?
My 2001 Toyota Tacoma 4x4 automatic transmission according to the manufacturer requires (ATF D-II or DEXRON III (DEXRON II)). I'm an aircraft mechanic and I've used Mobil 1 synthetics in all my vehicl...
We would expect Mobil 1 Synthetic ATF to help in this application.  Mobil 1 Synthetic ATF meets the requirements of Dexron II, IID, IIE, IIIG and IIIH. In addition, Mobil 1 Synthetic ATF will flow at ...
08/30/2009
Clarify Confusion Over Which ATF to Use in Ford Trucks
Ford specifies Mercon for the automatic transmission in the F-150 Lightning. Also, Ford emphatically states (in bold) in the owner's manual and service manual never to use a transmission oil that meet...
When the Mercon V spec was originally issued, Ford did not want fluids that met both Mercon and Mercon V to be used in vehicles. That is no longer the case.  You can use any of these following product...
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...
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