The only thing I've ever heard is to stay away for Bosch Platinums (bad for GM Waste Spark Systems). An ideal plug for vehicles requiring platinum performance or older vehicles calling for regular plugs, ACDelco’s Double Platinum Spark Plugs can give up to 100,000 kms # of service in some applications. Even if platinum plugs are a compatible part for a vintage car in the NAPA catalog, older analog ignition systems don’t generate enough voltage to take advantage of them, resulting in weak spark. See cross reference chart for AC Delco 41-981 and more than 80.000 other spark plugs. Are iridium plugs really worth the cost? Platinum spark plugs also run a bit hotter, preventing spark plug deposit buildup and fouling. Platinum spark plug. See Owner’s Manual for more information. What’s more, this set comes as a pack of eight, allowing you to fully replace the spark plugs in your engine, or have some lying around for spares. Automotive $32.00 $ 32. They are a good choice for such engines than other brands as they would improve mile service to about one hundred thousand miles before a replacement can be required. Platinum spark plugs are also recommended for cars with an electronic distributor ignition system, while double platinum spark plugs best fit vehicles with a waste spark distributor ignition system. #41-110 (ACDelco Professional Iridium Spark Plug) #41-962 (ACDelco Professional Platinum Spark Plug) #R44LTSM (ACDelco Spark Plug) Question, would #41-110 be in between or regular and Platinum? Features & Benefits. Funny, a few weeks ago I bought the same Ruthenium plugs, to replace the Iridium plugs in our '09 Mazda (with the same 2.3 l engine). I read somewhere AC DELCO Iridiums are factory fitted in 2011 VE SS 2. The 41-101 is the iridium version of the 41-993 which is the platinum version. In my Pontiac with an LT1 supercharged with 500 hp the AC's weren't the best. The #R44LTSM would be the coolest of all, yet basic, still good? Per NGK, G-Power Platinum plugs are good for 60K km, Iridium IX 100K km, and Iridium Laser 120K km. The factor plug was 41-932 and has been changed to 41-985 at .040 gap. When ordering through Volvo they used to send the 41-993 and now send 41-110 for their spark plug kit number 21467472. In reality, copper has the best performance of … See cross reference chart for AC Delco FR3LS and more than 80.000 other spark plugs. ACDelco Iridium Spark Plugs are the latest evolution in high-performance plug electrode material and are designed to last 100,000 miles. ACDelco 41-962 Professional Platinum Spark Plug. It yields decent longevity but ranks the poorest in performance. Ken T. I just got tired of changing plugs every 10,000 or so miles, Now I don't have to worry about it for a long time. 0 0. Platinum spark plugs. These spark plugs have a small center electrode which requires less voltage to generate a spark. I just changed my spark plugs and went with the Ac Delco Iridium plugs and have noticed no difference between them and the Ngk copper plugs I was using. ACDelco are not the only plugs out there. As upper post said the 00-01 5.3 engine has had a AC Delco spark plug no and gap change. Rapidfire Platinum Spark Plugs Designed for today's most popular vehicles, as well as several marine applications, ACDelco's Rapidfire® Platinum Spark Plug fits engines using conventional plugs, as well as newer vehicles requiring platinum performance. The platinum plugs last longer than the copper plugs, but not as long as the iridium plugs. Take ac delco as reported by Frugalmechanic. Re: ac delco spark plugs vs. autolite ? As I Said Earlier, My Bonneville Specs AC Delco #41-101 Iridium Spark Plugs. I wouldn't hesitate to drop an Iridium Plug in one of my engines if it was an AC Delco. Iridium vs. platinum vs. copper spark plugs? Actually, GM usually suggests using 41-162 platinum plugs in cars 5+ years old instead of these iridium plugs. Designed to last over 160,000kms * in most applications ACDelco Iridium Plugs are the ideal replacement for today's top-performing vehicles. After 100,000 miles the business end of the plugs still look new. What about platinum plugs? If installed in a regular engine, they would likely last longer than most people keep their car (barring any motor problems that can cause premature plug death). The plugs (ACD, Bosch or NGK) are iridium wire with platinum electrode. Same temp range. These advantages are reflected in the higher price tag. Thanks very much. I Paid 6 Bucks Each For Them At Advance Auto Last Fall, Not A Big Deal Every 100,000 Miles. Platinum spark plugs offer a slightly cheaper but less reliable option if you don’t want to spend as much on iridium spark plugs. I removed the production original iridium spark plugs, with no misfires! Ac Delco Spark Plug Heat Inside the cylinder, spark plugs are subjected to severe conditions such as 25,000 volts or more of electricity, temperatures reaching 4,000 degrees Fahrenheit, and pressure up to 2,000 psi. The plugs are suitable for car owners with electronic distribution systems. Replaced with the same plug. The main difference is the material that the 'tip' of the spark plug is made of - normal ones are usually copper, whereas the other two have tips made out of platinum or iridium. Thats why I asked. I replaced my spark plugs after 50k miles on a '94 camaro and the platinum plugs … Or is it just best to stick with good ol copper plugs on an all stock car? Platinum (Rapidfire®) Spark Plugs Designed for today’s most popular autos, ACDelco’s Rapidfire® Platinum Spark Plug fits engines using regular plugs, as well as newer vehicles requiring platinum … Was quoted $ 700 for a Holden dealer to replace + labour? gap change car i went iridium. 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