Harriet_uk wrote:That advice doesn't sound right!
Spark plugs every 4 years? I find that I have to clean every 6 months and change them every year....
HT leads don't last much longer
Dizzy cap and rotor arm.....again, every year
Fuel filter would start to break down WELL before the 8 year mark
The most important thing about looking after oldere cars is the OIL and oil filter. you need th change them more frequently, depending on the age. in my '73, I find I need to change them every 6 months, but I feel better about it if I change them more often (since it's a ten minute job if you're careful)
Even the newest cars would need all these things before those kind of intervals! And the older ones...even if you don't drive them things still degrade alot faster than that!!
Firstly they are tips not rules & secondly ...
The reason you have to clean your sparks every 6 months is becase the fuel / air mixture is too rich / lean, or due to oil fouling. Try fixing the root cause.
The ability of any component to last (such as HT leads) depends on how much mileage you do. A friend of mine races cars - his HT leads last for a couple of meetings, no more. HT leads are fine for 18-20k miles, and will gradually degrade over the following 2 years, leading to replacement after 4 (although with my own car they lasted for 8 years).
Dizzy cap & rotor arm - once again mine lasted for 8 years before needing to be replaced. Although they should have been replaced after four 'cos of corrosinn. The best method is to inspect your car at least once a month - that way you can keep on top of the situation.
The fuel filter will collect debris from the fuel & the tank (rust) from new. If you keep the tank full of fuel as much as possible, the chance of rust developing & debris clogging the filter will be far less - than driving around on a quarter of a tank. 8 years is the absolute maximum that it should be left. If power loss / fuel starvation is detected, then by all means change the filter sooner.
I do agree about your oil point (but then I wrote 5k originally anyway). Frequent oil & filter changes are an absolute must for any car.