Below are the list of cars that can use RON 95 fuel.....

Any comments or questions just feel free to comment about it.
Appearance
|
| Conditions
|
| Possible cause
|
| Normal
Light brown, tan or grey firing end. |
| A good indicator that the plug is functioning correctly and general engine conditions are good. | |
|
| Dry and wet fouling
|
| Can be caused by many different conditions. Carbon deposits build up when the plug fails to fire correctly and burn them off. Air/fuel mixture too rich, choke stuck on, electrical problem, extended periods of low speed driving, plug heat range too cold. All should be investigated |
|
| Overheating
When overheating occurs, deposits which have accumulated on the insulator tip may melt and give the tip a glazed appearance |
| Possible causes are overadvanced ignition timing, air/fuel mixture too lean, water or oil level too low, plugs not fitted (tightened) correctly, plug heat range too hot. |
|
| Deposits
Insualtor nose and electrodes encrusted with a build of deposits - usually off white in colour. |
| This is often caused by oil leakage through the piston rings or valve seals. Could be due to the wrong viscosity of oil being used. |
|
| Lead fouling
Lead deposits on the insulator nose. These are usually a yellowish brown in colour. |
| Lead content of petrol used is too high. Try petrol with a lower lead content. |
|
| Breakage
|
| Usually caused by abnormal thermal expansion in the combustion chamber. Maybe thermal heating or cooling shock. Causes as for overheating above. |
|
| Normal life
Growth of the plug gap during a plug's working life is normal. However, the increased gap will mean the spark is less efficient and hence fuel is wasted and strain is put on the ignition system. |
| Plugs are at the end of servicable life. Replace plugs as a set. |
|
| Abnormal erosion
|
| Due to the effects of corrosion, oxidation and reaction with the lead in petrol. |
|
| Melting
|
| Due to excessively high temperatures in the combustion chamber. Causes as for overheating above. |
|
| Erosion, Corrosion, Oxidisation
The surfaces of the electrodes are rough, in extreme circumstances the electrode material will have oxidised to the point of turning green |
| Possibly due to age, vehicle standing for a long time without use. |
|
| Lead Erosion
The ground electrode will appear worn away, the central electrode will appear chipped and the insulator nose will take on a yellowish brown. |
| This is due to chemical reaction between the nickel alloy electrodes and the lead compounds in petrol. |
The first stroke is the intake stroke. The piston
moves down the cylinder and creates a partial
vacuum in the cylinder. A mixture of air and fuel
is forced through the inlet valve into the cylinder
by atmospheric pressure, now greater than the
pressure in the cylinder. During this stroke,
the exhaust valve stays closed.
The second stroke is the compression stroke.
The piston moves up in the cylinder with both
valves closed. The air and fuel mixture is
compressed and the pressure rises.
Power Stroke
The third stroke is the power stroke.
Near the end of the compression stroke,
the air and fuel mixture is ignited by an
electric spark from the spark plug. The
combustion that occurs causes a rise in
temperature and enough pressure to force
the piston down again
The fourth stroke, or exhaust stroke, the
piston moves up again and forces the burned
gases out of the cylinder and into the exhaust system.