Hey Guys! I'm new on here. Well... I'm a member, but have just been lurking around researching. Lol. This is what's just happened... I work at a Ford Dealership, and this morning I asked the guy in the service department to rotate my tires. He said they would do a rotation, and also check my car over to insure everything was ok with it. So while he was looking my car over, he noticed according to the sticker that my oil hadn't been changed in a little over 10k miles. I told him that was my plan since I used synthetic Mobil 1, and that I was changing it this weekend. I told him I had the oil in the 'back' of the car, and that if he didn't mind, to get it out and just go ahead and change it for me. (It was up on the lift anyways getting its rotation, so why not? It would save me from having to do it myself. Lol) Anyways, he happily obliged... About 10 mins after my car was taken into the service department, he paged me on my desk phone. He said that I had mistakenly purchased the incorrect viscosity that my car requires, but he would throw me in some SynBlend Motorcraft 5w20 from the bulk tank. I declined the offer and assured him that after doing research online(BITOG), it was completely safe for my car to use the oil I had purchased, and that it was actually the same type of oil I was currently using in the engine for its 10k oci. He honored my decision and completed the Oil Change and rotation for me. Well as I was driving to get lunch on my break, I looked in the rearview mirror and noticed the M1 AFE 0w20 oil that I had bought for my car was still sitting it the backseat... Confused, I cut my Lunch break short and drove straight back to the service department. I asked why he had went against my wishes and used the Motorcraft instead of the M1 that I asked him to use. He looked at me with a weird look, and reached into the garbage pulling out the empty M1 jug that was previously 'IN MY TRUNK'!!! I had COMPLETELY forgotten about having oil in my trunk!!! The oil in the TRUNK was meant for my 2001 Explorer SportTrac! It of course wasn't 0w20 AFE, but rather M1 5w30 Extended Performance! He assumed that when I said "Back of the car" I was implying the 'trunk' not 'backseat', and that's why he asked if I was sure it was safe for my engine to use. When he told me this morning it wasn't the correct viscosity, I was assuming he was talking about it being 0w and not 5w.
It was completely my fault, as I should have been more specific of the intended oils' location inside of my vehicle. It was an honest mistake and could have been avoided if I would have just taken the oil out myself... So I guess what my question is... Can I just go ahead and keep the oil that was mistakenly put in (M1 5w30 Extended Performance), or should I change it out this weekend with the M1 0w20 I've been using? It wasn't cheap oil... So if it is safe and not gonna blow my engine, I'm completely fine with using it for this oci. But if it is going to cause harm, I will hang my head and change it Sunday. I've driven it about 20 miles so far today, and can't tell any difference in performance at all. If anything, at idle it seems smoother and a little quieter during hard acceleration. Could just be me though... I know for one week it's not going to have a problem running 30w... But over 10k miles is what I am concerned over. Any input is appreciated. I guess as ticky as I am about my vehicles, I want to be sure I'm not killing them. Lol. Thank again guys.
Oh btw! My car is a 2010 Lincoln MKZ with the 3.5 Duratec and has 50,7xx miles on it.
Oh btw! My car is a 2010 Lincoln MKZ with the 3.5 Duratec and has 50,7xx miles on it.