Oil or Transmission Fluid: What’s the Differential?

Of the many puzzling events that somehow led me to where I am today, the one I question most is why I was ever hired to work at Jiffy Lube when I was 16. The events of this past week were a reminder that I am unconditionally unqualified where it relates to automotive repair and maintenance.

Last week, my brother-in-law Paul performed several highly technical repairs on both of my cars. Every one of these repairs involved using specialized filthy mechanic tools that are inexplicably kept in a toolbox that cost more than a standard-issue passenger jet.

For reasons that must be analogous to why I’m always asked to disrobe when I go to the doctor for a sore throat, Paul started every repair by removing a wheel from the car. As he began to replace parts I couldn’t identify or locate on either vehicle, I began to ask the most logical questions that came to mind. One such exchange occurred while he was replacing the brakes on my Toyota Prius:

Me: Did you bleed the line?
Paul (with a baffled glance in my direction): Did I what?
Me: I meant do you need me to loosen the restrictor plate?
Paul: (no response)
Me: I’m just trying to help.

This line of questioning ended with Paul shaking his head in disgust and getting back to work. The entire process reminded me of the job I never should have had.

Nearly 20 years after I went for the initial interview at Jiffy Lube, I still know as little about cars as somebody can know and still be able to operate one. Back then I somehow passed muster with the management and was hired as a technician.

Upon hiring me, Gary, the Jiffy Lube manager handed me a training manual and instructed me to read through it before my first day of work. While I didn’t get through the entire manual in the allotted time, I did manage to read all the way to where it said “Training Manual” on the front cover.

Since I didn’t even have a learner’s permit yet, I had to ask my friend Andrew Wagner, who owned a 1964 Ford Fairlane, to drive me to work every day after school. In exchange for the daily ride, I had to agree to two things: 1) I would get him two bottles of transmission fluid per week – not for his transmission, but because transmission fluid is the most slippery substance known to man; and 2) I would allow him to pour the transmission fluid on the ground under his wheels and “light ‘em up” on the cul-de-sac where I lived. Watching him lay a half-inch of rubber on the ground, accompanied by the massive cloud of smelly smoke, still makes me laugh today. As an aside, the tire tracks were still there on the ground five years later.

In any case, my job was ill-fated from the start. Given my assigned work station in the lower level of the facility, my extraordinary inability to perform even the simplest of tasks, like changing the oil (which is, by all accounts, the primary reason for the existence of Jiffy Lube), went unnoticed by everyone but Pat, the other guy who worked the lower bay. Pat taught me the finer points of the ten-minute oil change, and while I admit that I didn’t understand a word he was telling me, I did learn that as long as there were guys like Pat around, I would never have to do this kind of thing myself.

Nevertheless, I mastered the art of removing the oil from all sorts of cars. My job required me to let the upper level guys know when the oil tank was completely drained so they could refill it with new oil. On more than one occasion I was guilty of forgetting to replace the bolt, or “spark plug,” thereby allowing all the new oil to drain right back out the bottom and into the collection bin. I was the only one who found this to be even remotely amusing.

Suffice it to say, I am not the person you want tooling around under the car unless the situation is entirely limited to retrieving a ball, a Frisbee or some other non-automotive item that has nothing to do with the car other than sheer proximity. Even then, there are probably better people for the job.

About two months in (I know, I’m just as shocked as you are) I was given an instruction I couldn’t recall having gotten before. The customer wanted to check the “differential.” Now, I clearly recalled my Sequential Math II teacher Mr. Hoolan discussing this concept a few weeks earlier, so my challenge was trying to figure out exactly what subtraction had to do with the underside of a Ford F-150. I felt silly about all those complaints I had in school that ‘I would never need to know any of this in real life.’

As I wracked my brain, Pat sensed trouble and came to the rescue. He showed me where the differential fluid was and handed me what looked like a bottle of caulk with a flimsy rubber point and a handle on the back of it that made air go in and out. I putzed around pretending to do something around the area Pat showed me for about five minutes and gave the all clear to the guys upstairs. Still today I wouldn’t be able to identify this region on a truck. And I’m reasonably certain the device Pat handed me was a joke since it made fart sounds when I moved the handle back and forth.

Several weeks later, and for reasons still unclear to me, I was “promoted” to work in the upper bay. This meant interaction with the customers and learning to identify an entirely new set of parts. I lasted for exactly one vehicle in the upper bay.

The owner of that vehicle, a brand new Chevy conversion van, came in for a simple oil change. I took care of it with ease, closed the hood and waited for someone to pull it out to make room for the next car. When nobody got in to pull it out, Gary the manager told me to take care of it. Never having driven a car before – let alone a van that needed much more clearance around sharp corners – I got behind the wheel, put it in drive and cut the wheel hard to the right. Keith, one of the upper bay guys, went out front to direct me.

It wasn’t so much the horrible, loud screech I heard that made me realize my Jiffy Lube days were over; the look on Keith’s face said it all. As did the owner of the van, who said it all and then some – and very loudly, might I add.

I cut the wheel way too tight, drove the side of the van right into the corner of the stone building and dragged the entire side along the wall for a good two feet, thus ending my storied career as an automotive repair technician.

Nowadays I rely on Paul to help me out with my auto repairs. And I do wish I could help instead of standing around asking dumb questions and hoping he doesn’t order me to fetch him a tool I won’t be able to identify, but I know myself too well.

I’m not completely hopeless, though... Paul asked me to come over this Saturday and to pick up a muffler bearing on my way. I’ve made a few calls and nobody seems to carry them, but this should be a piece of cake.