Granted, I'm not an oil wiz, and I only read here occasionally, but I thought I would add, I ran 1/2 a can of Seafoam through a vac line, and dumped the other half in the crankcase on my 3.5L Kia. At this point, I had about 2700 miles on that oil. I then ran it 200 more miles, and changed the oil. I...

Need the year , make , and model to tell you what the pressure SHOULD be. Most cars/trucks now a days run on about 60 PSI, and can be no-start with as little as a 5 lb drop. Unfortunately, a Gage is the only way to tell (Hint-Advance/discount auto part stores have a policy that they will refund mone...