How to Service Your MGB Service Intervals

Servicing your own classic is an easy and satisfying job, as well as that regular servicing will extend the life of your engine and increase the time between rebuilds and reduce the chance of breakdowns. All of the parts required to service the MGB are readily available and are quite cheap but it is important to buy good quality named components if possible (I had one set of points break and a duff rotor arm).

MGB engine to service



Classic cars need more maintenance and servicing than a modern car as there are few if none of the electronic gadgets. This does not mean that classics are pain and are always in the garage being fixed. The following is the recommended service intervals and maintenance schedule on a classic as given in workshop manual. These routines were written when car was new and being used as an everyday car so in the case of a classic being used as a second car or as a Sunday bit of fun then there these can be used as a guide.

Every 250 miles or weekly (or when you get the car out for the weekend)
Check the tyres for tread depth, cuts and sidewalls as well as the pressures
Check the wheel nuts or spinner for tightness
Check the engine oil level and top up to the required level if required
Check the fluid in the brake and clutch master cylinders, top up if required
Check the water level in the radiator and top up if required
Check the water in the washer bottle and top up if required
Check that all the electrical system is working light, wipers, horn etc


Every 3000 miles or every 3 months (also do 250 mile routine)
Change the engine oil and filter (advisable especially if doing low mileage)
Check the level in the carburettor dampers and top up if required
Check the fan belt for adjustment and condition, tighten or replace if required
Check the operation of the foot and hand brake and adjust if required
Visually inspect all the brake pipes for corrosion and leaks
Check the steering unit and gaiters for security and leaks
Check the lever ar, shock absorbers for leaks and operation
Check headlamp operation and alignment
Check seatbelts for condition and operation
Check condition of windscreen wipers
Check the condition of the exhaust system and check for leaks
Lubricate all grease points (except hubs)


Every 6000 miles or 6 months (also do 3000 mile routine)
Change the engine oil and filter (advisable especially if doing low mileage)
Check the valve clearances and adjust if required
Check hoses for leaks and the condition
Lubricate the accelerator control link and pivot
Clean and re-gap the spark plugs
Check points, clean re-gap or renew if required, lubricate distributor
Check and adjust the ignition timing if required
Check the gearbox oil level and top up if required
Check the rear axle oil level and top up if required
Check the front wheel alignment
Check the brake pads and discs
Lubricate the handbrake cable
Check and adjust the carburettors if required


Every 12000 miles or annually (also do 6000 mile routine)
Renew the air filters
When fitted renew the fuel filter
Clean and check the crankcase breather
Renew the oil filler cap
Renew the spark plugs
Renew the contact breaker points
Check and clean brake shoes and drums


Every 24000 miles or 2 years (also do 12000 mile routine)
Renew fan belt
Flush cooling system and replace antifreeze
Fit new distributor cap and plug leads
Renew gearbox oil and clean overdrive filter
Renew rear axle oil


Every 36000 miles or 3 years (also do 24000 mile routine)
Change all rubber hoses and seal in the braking system



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| Updated 22-Feb-2008 |