Vintage Car Servicing: Why Pre-War Cars Need Different Care

Written by Petro Olekhnovych, mobile mechanic in Aylesham, Kent

Vintage car servicing is less about swapping filters and more about little-and-often care: greasing, adjusting and checking by hand. A pre-war car was designed to be looked after every few hundred miles, not once a year. Follow the car’s own handbook, not a modern service schedule, and the car will reward you.

How a pre-war car differs from a modern one

A modern car is built to be left alone. Many parts are “sealed for life” and a computer tells you when a service is due. Older cars work the other way round.

Many cars made after about 1965 have sealed components that cannot be greased. Before that, cars had grease points (nipples) all over the chassis, steering and suspension. They need topping up by hand on a regular schedule.

The big differences on a pre-war car are usually:

• Lots of grease and oil points on the steering, suspension, propshaft and controls.
• Brakes that may be mechanical, worked by rods or cables rather than fluid.
• Simple oil filtration, sometimes just a strainer.
• Different electrics, which may be 6 volt or positive earth.
• Shorter service intervals, measured in hundreds of miles.

None of this makes the car fragile. It just means the owner, or their mechanic, has to stay on top of it.

Greasing: the job that matters most

If one job defines vintage car servicing, it is greasing. In the 1920s, many handbooks asked for grease points to be done about every 250 miles. Later handbooks moved to 500 or 1,000 miles.

As an example, the handbook schedule for a 1946 Lanchester LD10 lists greasing the front suspension and steering linkage every 500 miles. The MG Car Club’s Y Register notes that king pins and early trunnions may need greasing every 500 miles, with other points ranging from about 500 to 3,000 miles.

Without grease, metal rubs on metal. That causes rapid wear, lets in grit and water, and makes the steering feel heavy. A dry squeak when the suspension moves can be a warning sign.

A few points worth knowing:

• Not every nipple takes grease. On some cars the steering rack or suspension trunnions need oil instead. Check the handbook.
• Pump until fresh grease appears from the joint, then wipe off the old, dirty grease.
• Keep grease off rubber bushes on later cars, as it can rot the rubber.
• Keep a log of the date and mileage each time you grease the car.

If you cannot find the grease points, a workshop manual or your car club can usually provide a diagram.

Brakes: often rods and cables, not fluid

Many pre-war cars have mechanical brakes. Pressing the pedal moves rods or cables, which push the brake shoes against the drums. Only a few makers fitted hydraulic brakes before the mid-1930s.

Mechanical brakes work well when they are properly maintained. Problems usually come from neglect. The linkages need lubricating, worn pins and bushes need spotting, and the brakes need adjusting so each wheel brakes evenly.

If your vintage car pulls to one side, the pedal feels different, or the brakes seem weaker than usual, stop using it until the brakes have been checked. Brakes are not something to experiment with.

Engine oil and electrics

Oil. Some vintage engines only have a strainer or very basic filtration. Oil makers sell specific vintage oils for these engines, including non-detergent oils for cars whose handbook calls for one. Owners and specialists do not all agree on detergent versus non-detergent oil, so the safe approach is to use what the handbook specifies, or ask your car club or a specialist.

Electrics. Many older British cars are positive earth, meaning the battery’s positive terminal goes to the chassis. Some older cars also run on 6 volts. Polarity matters for items like radios and ammeters, and the battery goes in “backwards” compared with a modern car. Always check the voltage and polarity before fitting a battery, accessories or jump leads.

How often to service, and why no MOT does not mean no checks

Cars built or first registered more than 40 years ago can be exempt from the MOT, provided they have not been substantially changed. But GOV.UK is clear that you must still keep the car roadworthy. Using a vehicle in a dangerous condition can bring a fine of up to £2,500 and 3 penalty points.

That makes regular servicing more important, not less. We explain the rules in more detail in our post on the historic vehicle MOT exemption.

As for how often, go by the handbook. Many pre-war handbooks set greasing and checks by mileage, often every few hundred miles. For a car that only does a few hundred miles a year, a sensible minimum is to grease it at least every 1,000 miles or once a year, whichever comes first, as one experienced classic mechanic recommends.

Before the driving season, give the car a full look over: fluids, grease points, brakes, tyres, lights and electrics. If the car has been laid up for a long time, it may need recommissioning rather than a simple service.

How we can help

We service and repair classic and vintage cars, and we come to you. That suits a pre-war car, as you do not have to drive or trailer it to a garage. We cover Aylesham, Canterbury, Dover, Deal, Sandwich, Folkestone and the villages around them. See our full list of areas we cover.

Labour is £30-£50 per hour depending on the job and how involved it is. Parts are extra. We agree the price with you on WhatsApp before any work starts. For bigger jobs, we also carry out classic engine rebuilds in a Kent workshop.

Frequently asked questions

Can a normal garage service a vintage car?
Some can, but many are set up for modern cars and diagnostic computers. A pre-war car needs someone happy to work from the handbook, with grease guns, spanners and patience.

Should I use modern oil in my pre-war car?
Use what the handbook specifies. Some vintage engines with basic filtration call for non-detergent oil, and oil makers sell specific vintage grades. If in doubt, ask your car club.

My vintage car is MOT exempt. Do I still need to service it?
Yes. You must still keep it roadworthy, and the fine for driving a dangerous vehicle can be up to £2,500 and 3 penalty points.

How long does a vintage car service take?
It depends on the car and how many grease points it has.

Need help? Send a WhatsApp to 07563 350335 with your car’s make and model and we’ll come to you.

Sources

• Grumpy old mechanic says grease it (Wheels-Alive)
• DIY servicing: greasing the car (MG Car Club Y Register)
• Every 500 miles: Lanchester LD10 maintenance schedule
• Restoring mechanical brakes on a classic car (AutoRestorer)
• Detergent vs non-detergent oil (AutoRestorer)
• Vintage Millerol 40 (Millers Oils)
• Positive ground cars (Restore an Old Car)
• Historic (classic) vehicles: MOT and vehicle tax (GOV.UK)