Automotive Servicing NC I study materials
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The 'Oil Change Only' Trip to the Province

Automotive Servicing NC I · Put your knowledge to work in context.

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The 'Oil Change Only' Trip to the Province

A 2019 1.5 L MPV arrives at 15:30 with 45,200 km on the odometer. The owner's only request is: 'Just change the oil. Tomorrow I drive 300 km to the province with my wife and three children, and please don't sell me extras.' Your inspection finds: last oil change 9,800 km and 8 months ago; the car is used mainly for 4 km trips to school and the market; coolant is at the MIN mark; brake fluid is dark amber and a tester shows 3% moisture; tyre pressures are 26, 27, 33 and 33 psi against a placard of 33 psi; the air filter is heavily dusted; the battery rests at 12.4 V after standing overnight; the serpentine belt is glazed with fine cracks; the wiper blades are torn; the cabin filter is clogged. The owner's service booklet specifies 10,000 km or 6 months normal service, and 5,000 km or 6 months severe service.

1. Sort these findings into 'must be corrected before tomorrow's trip' and 'can be scheduled later'. Justify each choice with the change in consequence caused by a 300 km highway trip with five people on board.

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Before the trip:

  • Oil and filter. 9,800 km and 8 months on a car doing 4 km trips is past even the normal interval and well past severe service. Short trips never boil off fuel and water from the oil, so the oil is diluted and acidic. Cheap, and it is what the customer came for.
  • Coolant. At MIN with a loaded car on a highway, low coolant becomes overheating and a warped head. Top up and pressure-test; if it will not hold pressure, do not release the car.
  • Tyre pressures and condition. 26 and 27 psi are roughly 20% under placard. Underinflation plus highway speed plus a full load equals heat and a blowout risk that a 4 km school run never exposes. Set to 33 psi cold and inspect for cuts, bulges and date codes.
  • Brake fluid. 3% moisture drops the boiling point substantially. On a flat 300 km run it may never matter; if the route includes long descents, brake fade becomes a real risk with a full car. Replace and bleed.
  • Serpentine belt. If the cracks reach the ribs or chunks are missing, replace - a failed belt on the highway means no charging and no water pump.

Can wait, with a written note: cabin filter, wipers (unless the season is wet), air filter cleaning or replacement, and the battery. At 12.4 V it is around half charged, which is normal for a car that never runs long enough to recharge - load-test it and advise a longer drive, but a healthy battery will start the car tomorrow.

2. The owner repeats that he does not want to be upsold. How do you present the findings without overselling, and what do you put on the job card?

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Show, don't tell. Walk the owner to the car and let the evidence speak: the dipstick wiped on a rag, the coolant reservoir against the MIN line, the pressure gauge reading 26 psi, the moisture tester showing 3%. A customer arguing with a gauge is different from a customer arguing with a salesperson.

Then group, don't list. Write two short columns on the job card:

  1. Safety for tomorrow - oil and filter, coolant top-up and pressure test, tyre pressures and inspection, brake fluid.
  2. Can wait until next month - cabin filter, wipers, air filter, battery check.

Give the price for column 1 and for column 2 separately, and say plainly what each failure looks like: 'If the belt lets go on the highway you lose charging and cooling; the car stops.' One sentence per item, no scare words, no package deals. Let him choose from column 1 if the budget is tight, and help him prioritise - coolant and tyres before the cabin filter.

On the job card: the measured values (26/27/33/33 psi, 3% moisture, coolant at MIN, 12.4 V), the items recommended, the items declined with a line for the customer's signature and the date. That signature is not a sales tactic; it is an accurate record that the shop identified the condition and the customer chose to defer it.