2007-09-11 00:12:31 · 8 answers · asked by jellybeanrrb 1 in Cars & Transportation ➔ Maintenance & Repairs
Platinum plugs are 100,000 miles
Non Platinum are 30,000 by most manufacturers recommendations.
2007-09-11 00:32:47 · answer #1 · answered by Vince J 5 · 3⤊ 2⤋
We really need the year, make and model of your car. Platinum plugs are good for 50,000 miles, iridium.100,000 and regular old low dollar plugs 30,000 miles and and under. Inexpensive spark plugs have copper, chromium and nickel alloys to make them try to live as long as possible inside today's high temperature combustion chambers.
Iridium tipped plugs are in the precious metal family which includes gold, silver palladium, osmium and rhodium.
Iridium is so hard metallurgists refer to it as nearly a super hard ceramic even though is not. It has the highest melting point of all the precious metals. *Most likely this is the reason they are the most expensive plugs. They probably are time consuming to manufacture.
Oddly, irridium is one of the least expensive precious metals. If your ever intrested in the prices and physical aspects of precious metals go to: Johnson Matthey
I've been a car and farm equipment nut my whole life but earned my living in a precious metal facility where we melted and rolled into sheet, platinum and platinum / rhodium alloy metals for glass and ceramic industry.
I can honestly say that precious metal tipped electrical kiln and furnace controllers last longer also. Both electrical and thermo - conductivity and resistance to corrosion make contact points last virtually for ever in atmosphere.
Combustion chambers are another story. The constant heat and additives in gasoline and engine oil ( when piston rings and cylinder walls get old and abraded) form hard carbon deposits on the plugs. The gap eventually widens also.
2007-09-11 01:23:25 · answer #2 · answered by Country Boy 7 · 0⤊ 1⤋
Modern cars with spark plugs made from exotic metals last almost 100,000 miles. Generally leaving spark plugs alone until the check engine light turns on and detects a emission problem. When the spark plugs finally need replacing also replace the other high energy parts wires distributor cap and rotor. Some cars have ingnition coils on top the plug.
2007-09-11 00:23:45 · answer #3 · answered by John Paul 7 · 2⤊ 3⤋
Your car manufacturer's maintenance schedule tells you when to have your spark plugs replaced. If you owned a Ford, you wouldn't want to follow the maintenance instructions for a Yugo, would you?
2007-09-11 00:27:53 · answer #4 · answered by bobweb 7 · 3⤊ 0⤋
Regular resistor plugs last 20K, Platinum 40K and Double Platinum 50K..... no spark plug lasts 100K miles....
I just pulled out a set of regular platinums after 40K and they were toast.
2007-09-11 01:06:53 · answer #5 · answered by Stampy Skunk 6 · 0⤊ 1⤋
I change mine every 20,000 along with the wires.
2007-09-11 00:52:00 · answer #6 · answered by Anonymous · 0⤊ 1⤋
Well let me ask, for example, what is the year/make/model you drive? because it depends...
2007-09-11 00:26:38 · answer #7 · answered by "/ J()€ 5 · 1⤊ 0⤋
a good rual of thumb is to change your sparkplugs every forth oil change
2007-09-11 00:35:53 · answer #8 · answered by Dingy ring 2 · 1⤊ 2⤋