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I looked under my neighbors F150 the other day for an oil leak. He has only been to Jiffy Lube and the dealer for oil changes since he bought the truck in 2006. The whole under area was dry except for one place. It actually had oil drip on the drain plug and what looked like to be 3M Weatherstrip Sealant squeezing out under the head of the drain plug. I put a wrench on it and tightened as much as I dared, about 1/8" turn and stopped. I believe the oil pan threads are stretched. I am going to do an oil change this weekend and I have already gotten a new drain plug and seal for it. He had every invoice for everything thing that has been done and it only mentions the "oil leak" 2 times on the Jiffy Lube tickets but none on the dealer tickets. He has been seeing the oil for the last 3 years, drops on the ground and adding as needed. Someone saw it and should have brought to his attention but is trying to hide with the "Gorilla Snot" around the drain plug. Two pics. A before and after I wiped dry and tightened and you can still see the oil seep at the lower area and soon to be a drop. I told him the same thing. I don't trust anyone but myself for any fluids when buying and always change them all to get a base to start from.
I started running 0w-20 oil this yr and like the results I'm getting. Here's a thread I did: https://www.tahoeyukonforum.com/threads/latest-uoa-0w-20-07-6-2l-w-180-k-mi.136491/#post-1711683
When you say you "noticed" is that because that is what was on the service ticket or did you see them put the 0W-20 into your vehicle?
They need to put correct oil in vehicle as per oil cap.
Yes, the sewing machine oil (0W-20) will probably give you 0.01 MPG better. You've probably disabled it, but you can add another 0.001 MPG for engine Stop - Start. This is being pushed by the EPA. For longer engine life many believe 5 or 10W - 30 is better. The problem is, many dealers simply will not do it. I've had trouble (perhaps a run of bad luck) of using oil change places on my vehicles. Growing up in Detroit, I was brainwashed to change my oil at 500 miles on a new vehicle, and then every 3000 miles after that.
The last time I went to a quick lube they underfilled it. I checked the oil level when I got home and it was 2 quarts low. The oil didn't even reach the dip stick. In a prior incident following an oil change, the oil filter came loose and I had a massive oil leak. These quick lube places can't be trusted. They hire cheap low skilled labor and rely on insurance to cover their mishaps. The dealer is the only one I allow to touch my vehicle.
What is the problem with 0W-20? I run Amsoil 5W-20 and no issues with mine. 65,000 miles and not burning or using oil. I did add a catch can and get about 1/2 pint in it every 5,000 miles. Thinner oil flows better and this engine is clearanced to run fine on 0-20.
