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MG RV8 Maintenance

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MG RV8 Maintenance Schedule



ENGINE NUMBER: Located on the side of the engine block between 3 & 5 cylinders. 48A signifies 3948cc 9.35-1 high compression V8.

GEARBOX NUMBER: Stamped on the bottom right hand side of gearbox housing.

BODY NUMBER: Stamped on a plate, affixed to the bonnet lock platform and over sprayed in body colour. ie. 2MG40J000360Z ( “Z” is the plant identifier – Cowley ).

RV8 VIN NUMBER: Is located under the bonnet on off side of bonnet slam panel is a Rover Group Limited vehicle identification plate, also found on this plate is the vehicle colour and interior trim colour.
It is also found etched into the nearside front windscreen and lastly stamped into the boot rain channel on the offside.
On earlier cars it is found inside the boot itself and in both cases it is over sprayed in body colour.

OTHER VEHICLE NUMBERS: Are also recorded for the Cross member, Rear axle , Facia and finally the vehicle key numbers. (all of which are recorded on British Motor Heritage Trust Certificate ).

MGRV8 PART NUMBERS: There are 2053 part numbers of which 607 are special to the RV8 and marked with the familiar ZKC _ _ _ _ Number. ( ie ZKC 6683 ).

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Kilometres X 1000 10 20 30 24 50 60 70 80 90 100 110 120
Months 6 12 18 24 30 36 42 48 54 60 66 72
Vehicle Interior                        
Check condition of seatbelts, mountings, inertia reel etc.   x   x   x   x   x   x
Check operation of all lamps & warming indicators x x x x x x x x x x x x
Check operation of wipers , washers and wiper blades x x x x x x x x x x x x
Check operation of hand brake & adjust if required   x   x   x   x   x   x
Vehicle Exterior                        
Check adjust headlamp & auxiliary lamp alignments       x       x       x
Remove road wheels   x   x   x   x   x   x
Check tyres cuts, uneven wear, tread depth & pressures x x x x x x x x x x x x
Renew fuel filter       x       x       x
Inspect brake pads for wear, callipers and discs x x x x x x x x x x x x
Check front wheel alignment   x   x   x   x   x   x
Lubricate bonnet catch & door catches   x   x   x   x   x   x
Under Bonnet                        
Check cooling & heating system for leaks. Top up x x x x x x x x x x x x
Change engine coolant (anti-freeze Ethylene glycol based)       x       x       x
Lubricate distributor rotor spindle       x       x       x
Renew Spark plugs       x       x       x
Clean & re-oil air filter       x       x       x
Clean plenum chamber ventilation passage       x       x       x
Renew charcoal cannister                       x
Check condition of drive belts       x       x       x
Renew ancillary driving belts                       x
Check & top up clutch fluid reservoir   x   x   x   x   x   x
Check & top up brake fluid reservoir   x   x   x   x   x   x
Change brake & clutch fluids       x       x       x
Check & top up windscreen washer reservoir x x x x x x x x x x x x
Lubricate accelerator linkages   x   x   x   x   x   x
Check & adjust ignition timing       x       x       x
Check fuel lines (leaks & perished rubber connections)   x   x   x   x   x   x
Check exhaust gas sensor       x       x       x
Check vapour lines       x       x       x
Check brake booster vacuum hoses & valve       x       x       x
Remove battery connections clean  grease & refit       x       x       x
Visually check radiator for external obstructions   x   x   x   x   x   x
Under Vehicle                        
Renew engine oil & filter   x   x   x   x   x   x
Renew engine oil x   x   x   x   x   x  
Check / top up gear box oil   x   x   x   x   x   x
Renew gear box oil       x       x       x
Check / top up rear axle oil   x   x   x   x   x   x
Renew  rear axle oil       x       x       x
Lubricate propeller shaft universal / sliding joints   x   x   x   x   x   x
Visually check brake servo hose, brake, fuel, clutch pipes / unions leaks etc. Investigate if necessary x x x x x x x x x x x x
Check exhaust system for leaks , security & damage       x       x       x
Renew oxygen sensor                       x
Renew catalytic convertors 160,000 Kms or earlier if damaged or not complying with emission levels.                        
Check / tighten steering unit and rod ball fixings and also check condition of ball joints and dust covers.   x   x   x   x   x   x
Check shock absorbers   x   x   x   x   x   x


Rover Dealers MG RV8 Maintenance Check Sheet:
For 100 mile service, B service, C service.


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Fuses are colour coded to identify amperage as follow:-
Yellow - 20 amp Red - 10 amp Blue - 15 amp



RATING  (amps)




Fuel, Ignition coil, anti-theft alarm.



Right hand side tail and Number plate lights, Interior light, Fascia illumination.



Temperature gauge, Fuel gauge and Tachometer.



Spare Fuse.



Right hand headlight – main beam.



Brake lights, Warning lights and Voltmeter.



Front Fog lights.



Cigar lighter.



Warning lights, Indicators and Reversing lights.



Rear Fog lights.



Cooling Fan.



Radio Cassette memory, electric Boot switch warning light, Clock, Interior light, Horn, Engine Management and Anti-theft indicator.



Spare Fuse



Heater blower motor



Windscreen wiper / washer






Fuel pump.



Left hand Head light – main beam



Headlights, Sidelights, Anti-theft alarm and Boot release.



Spare Fuse






Radio Cassette and Rear Amplifier.



Spare Fuse



Right hand Headlight – dip beam



Left hand Headlight – dip beam



Left hand side, Tail and number plate lights, radio cassette illumination, Facia Illumination.

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Recommended engine oils:

Castrol Magnatec Semi-Synthetic 10W-40
5.5 Litres required with filter

RV8 QUAIFE Differential (automatic torque bias)
(TBA Type):

Silkolene's Silktran Synthetic 5, 75W-90 GL5

RV8 Gearbox: Castrol's SMX-S fully synthetic 75W-85 GL4
Oil filter: Unipart GFE121 which is now superseded by GFE422
Fleetguard LF4016
Coolant: Recommended:- Bluecol  IAT antifreeze 2 year protection for use in historic vehicles. This Product contains Silicates as an inhibitor to help prevent corrosion - IAT (inorganic additive technology).
If not available use Ethylene Glycol based antifreeze
Don’t Use: OAT (organic Acid Technology) as it destroys seals & gaskets in older engines.
HOAT (hybrid Organic Acid Technology) usually coloured green….also not recommended for older engines and historic vehicles.

The above Information gained from research carried out by The Federation of British Historic Vehicle Club a very thorough and respected organisation.
Sparkplugs: Bosch WR8DC
Air filter: K&N No.ZKC6615
Fuel filter: Lucas 6FU, Coopers Fuel Filters. Large metal filter WZ168 and small transparent filter is WZ15


Capacity 3950cc
Firing Order 1 – 8 – 4 – 3 – 6 – 5 – 7 – 2
Idle speed 700 + or – 25 rev/min
Ignition System  
Type Breakerless ignition
Spark plugs Champion RN11YCC
Spark plug gap 12 volt, Negative (-) earth
Battery type Sealed for life
Voltage and polarity 12 volt, Negative (-) earth
Wheels and Tyres  
Wheel type and size 6J X 15 alloy
Tyre size 205 / 65 ZR15
Tyre pressure: Front 1.5 bar 22 lbf/in
Tyre pressure: Rear 1.6 bar 24 lbf/in
Road wheel nut torque 72 Nm
Overall length 4.1 m 13ft 6.0ins
Overall width (including mirrors) 1.69 m 5ft 6.5ins
Overall height * 1.32 m 4ft 3.6ins
Ground clearance* 130 mm 5.1ins
Wheelbase 2.32 m 7ft 7.7ins
Turning circle (kerb to kerb) 10.94m 35ft 10.8ins
Wheel alignment (Front)* 0° 5' + 10' Toe - in
Front wheel camber 0° 24' ± 30' positive
Front wheel castor 3° 48' ± 54'
*At unladen weight  
Fuel tank 51 litres 11gallons
Engine oil & filter change 5.5 litres 9.7 pints
Manual gear box refill 2.7 litres 4.8 pints
Cooling system refill 5 litres 8.8 pints
Washer reservoir 3.8 litres 6.7 pints
Fuel tank 51 litres 11gallons
Engine oil & filter change 5.5 litres 9.7 pints
Manual gear box refill 2.7 litres 4.8 pints
Cooling system refill 5 litres 8.8 pints
Washer reservoir 3.8 litres 6.7 pints

Fuel Consumption

All figures are shown in miles per gallon and litres per 100 kilometres and are
from officially approved tests under the Car Fuel Consumption Order 1983.
These are intended to provide fuel economy information for model to model
comparisons and are achieved in standard tests. They do not express or imply
any guarantee of fuel consumption for the particular car with which this information
is supplied.

Model Simulated/urban Driving Constant Speed 90kph (56mph) Constant Speed 120kph (75mph)
  Litres/100 mpg Litres/100 mpg Litres/100 mpg
MGRV8 16.4 17.2 6.9 40.9 8.7 32.5


1. PRE CLEANING PREPARATION: Gently brush all crevices with a soft brush 
to dislodge any dirt, then gently tap the filter.

2. SPRAY ON CLEANER: Spray K&N air filter cleaner into entire element and let 
soak for at least 10 minutes.

3. RINSE OFF: Rinse off element with low pressure water (tap water ok). Always
flush from inside to outside.

4. DRYING: Always dry filter naturally, after rinsing shake off excess water & let
element dry out naturally. 
                                            * Do not use compressed air
                                            * Do not use open flame
                                            * Do not use heat dryers
NB. Excess heat will shrink the cotton fibre & compressed air will tear or blow holes in the element fibre.

5. CLEANING HINTS: Because elements are so expensive to replace ($120).
                                            * No petrol to be used for cleaning
                                            * No steam cleaning
                                            * No caustic cleaning solutions
                                            * No strong detergents
                                            * No high pressure cleaning
                                            * No cleaning solvents
Any of these products will cause damage to the cotton fibre filler plus hardening and shrinking the rubber end caps.

6. RE - OILING: When filter has thoroughly dried out naturally always use K&N 
Air Filter Oil. The oil is sprayed down into each pleat, with one press per pleat.
On completion, wait 10 minutes and re-oil any spots you have missed. 
A proper oiled filter will appear uniformally red in colour. Never use a K&N Air 
Filter without oiling.

NB. K&N Filters are among the most expensive and when correctly cleaned will last for years and years. Skimping on the correct cleaning products can have serious consequences if the filter is ruined and requires replacement.


Maintenance Locations
1. Oil Filter Element 14. Axle Oil Filter Level Plug
2. Alternator Water Pump Drive Belt 15. Coil
3. PCV Filter 16. Air Cleaner
4. Coolant Filler Plug 17. Distributor
5. Engine Oil Drain Plug 18. Engine Oil Filter Cap
6. Brake Fluid Reservoir 19. No 1 Spark Plug
7. Clutch Fluid Reservoir 20. Engine Oil Dipstick
8. Gearbox Oil Filter Level Plug 21. Coolant Expansion Tank and Cap
9. Gearbox Oil Drain Plug 22. Windscreen Washer Reservoir
10. Handbrake Cable Adjuster 23. PCV Air Intake Filter
11. Auxilary Fuel Filter. 24. Axle Oil Drain Plug
12. Main Fuel Filter  
13. Battery  

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MG RV8 Security Locking Wheel Nuts

RV8 Lock Nut

Common to most MG RV8’s each wheel is fitted with a special security wheel nut.
This is to provide security and protection against thief.
The wheel nuts in question vary and can only be removed with the aid of a special matching wheel nut socket.
The special wheel nuts are classified according to the table below and identified by a letter followed by a number.
i.e. A = 7
A = 7. B = 42. C = 29. D = 16. E =4. F = 36. G = 12. H = 98. I = 9. J = 53. K = 69. L = 30.
M = 2. N = 23. O = 57. P = 70. Q = 84. R = 93. S = 25. T = 46.

Information kindly provided by Aiden Pavey

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