thaghost87 Posted September 24, 2008 Report Share Posted September 24, 2008 Anyone know of any difference in the Professional Platinum and the regular Platinum ac delco plugs? besides price and part #(Professional Platinum 41937 and regular 41987)... O and the price for the Professional Platinum is a WOMPING $10.99 at local auto store. geesh Link to comment Share on other sites More sharing options...
BodybyFisher Posted September 24, 2008 Report Share Posted September 24, 2008 Anyone know of any difference in th Professional Platinum and the regular Platinum ac delco plugs? besides price and part #(Professional Platinum 41937 and regular 41987)... O and the price for the Professional Platinum is a WOMPING $10.99 at local auto store. geesh Get them at Rockauto. Regular plugs won't last long, the platinum plugs have platinum pads on the anodes that protect the anode from wearing out. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
thaghost87 Posted September 24, 2008 Author Report Share Posted September 24, 2008 Anyone know of any difference in th Professional Platinum and the regular Platinum ac delco plugs? besides price and part #(Professional Platinum 41937 and regular 41987)... O and the price for the Professional Platinum is a WOMPING $10.99 at local auto store. geesh Get them at Rockauto. Regular plugs won't last long, the platinum plugs have platinum pads on the anodes that protect the anode from wearing out. sorry i worded it incorrectly, there are two different platinum plugs by ac delco... one is $10.99 and the other is $5.99... the part numbers are different Link to comment Share on other sites More sharing options...
BodybyFisher Posted September 24, 2008 Report Share Posted September 24, 2008 Anyone know of any difference in th Professional Platinum and the regular Platinum ac delco plugs? besides price and part #(Professional Platinum 41937 and regular 41987)... O and the price for the Professional Platinum is a WOMPING $10.99 at local auto store. geesh Get them at Rockauto. Regular plugs won't last long, the platinum plugs have platinum pads on the anodes that protect the anode from wearing out. sorry i worded it incorrectly, there are two different platinum plugs by ac delco... one is $10.99 and the other is $5.99... the part numbers are different Oh, I can't help with that. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
thaghost87 Posted September 24, 2008 Author Report Share Posted September 24, 2008 Anyone know of any difference in th Professional Platinum and the regular Platinum ac delco plugs? besides price and part #(Professional Platinum 41937 and regular 41987)... O and the price for the Professional Platinum is a WOMPING $10.99 at local auto store. geesh Get them at Rockauto. Regular plugs won't last long, the platinum plugs have platinum pads on the anodes that protect the anode from wearing out. sorry i worded it incorrectly, there are two different platinum plugs by ac delco... one is $10.99 and the other is $5.99... the part numbers are different Oh, I can't help with that. lol.. ok .. well i think i just answered my own question, the $10.99 one has Dual tip provides outstanding performance and exceptional durability Ceramic insulator is nearly diamond-hard and provides added strength and shock resistance Nickel/chrome alloy electrodes resist wear from gap erosion and corrosion for maintenance-free service Hot-tip insulator heats fast and fires hot to resist fouling Copper-core center electrode fires hot to resist fouling and improve heat dissipation Fits older engines that originally used conventional plugs is there any advantages to have the dual tip? Link to comment Share on other sites More sharing options...
Ranger Posted September 24, 2008 Report Share Posted September 24, 2008 Yes. Older Northstars were waste ignition (or some term like that). Meaning that the plugs fired on compression as well as exhaust stroke. Half the plugs fire + to -. The other half fired - to +. Thus you needed Platinum tips on both electrodes. Link to comment Share on other sites More sharing options...
Cadillac Jim Posted September 24, 2008 Report Share Posted September 24, 2008 All distributorless ignitions, and even coil ignitions that use one coil with two plugs, use waste-spark ignition, which fires with positive ground on half the plugs, and fires near TDC exhaust as well as near TDC compression. That is just about all modern cars and motorcycles that don't have coil-on-plug. Of course, coil-on-plug is pretty common on Cadillacs these days. I would think that the dual electrode may provide a small advantage in performance and gas mileage. The all-out performance crowd arranges the plug gasket to keep the spark plug electrode at an angle that provides the best ignition, which is determined experimentally by rotating the plug while an engine with a particular cylinder head is on a dynamometer. Having two electrodes may or may not make part or all of this small difference. -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
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