E30Conman 0 Report post Posted May 20, 2012 My 89 325i 5spd 'vert runs on BP 98 Ultimate and I wondering whether a dose of injector cleaner is worthwhile? (152 000kms). Whats the low down on these additives, worth the money? Are some better than others? Interested in feedback? Cheers. Quote Share this post Link to post Share on other sites
huff3r 347 Report post Posted May 20, 2012 I've used them occasionally but to be honest never noticed any difference in the way the car ran, or the fuel economy I achieved. Not really sure if they actually do anything haha. Quote Share this post Link to post Share on other sites
kiwi535 538 Report post Posted May 20, 2012 i used to chuck one in every now and then a few weeks before an oil change(so the stuff was gone before the new oil went in,)they are high in detergents Quote Share this post Link to post Share on other sites
Michael. 2313 Report post Posted May 20, 2012 I think one would be better off removing the injectors and having them professionally cleaned. Quote Share this post Link to post Share on other sites
Neal 540 Report post Posted May 20, 2012 Used STP on E30 & E36 , biggest difference noticed on E30 323i. Would gain around 25 - 30 km on a tank of gas. Stats based on 600,000 km of commuting with av speed of 52.4 kmh (Sad ah). Commute was 64 km per day in varying driving. 100kmh to crawl so mainly low rpm. Bigger diff on unleaded petrol suggesting that the 95 octine had more crap in it compared to leaded. 98 seemed cleaner when that became available , didn't notice any diff running 98 after injector clean. Quote Share this post Link to post Share on other sites
Greg111 13 Report post Posted May 20, 2012 No gain, no loss, won't hurt. Quote Share this post Link to post Share on other sites
kwhelan 241 Report post Posted May 20, 2012 Subara upper engine cleaner is the bomb google it plenty of very satisfied customers My 89 325i 5spd 'vert runs on BP 98 Ultimate and I wondering whether a dose of injector cleaner is worthwhile? (152 000kms). Whats the low down on these additives, worth the money? Are some better than others? Interested in feedback? Cheers. Quote Share this post Link to post Share on other sites
Greg111 13 Report post Posted May 20, 2012 Subara upper engine cleaner is the bomb google it plenty of very satisfied customers Not ideal to clean injectors??? Goes in with the petrol via the petroleum tank. Quote Share this post Link to post Share on other sites
Lucan 196 Report post Posted May 20, 2012 I think one would be better off removing the injectors and having them professionally cleaned. Agreed Quote Share this post Link to post Share on other sites
E30Conman 0 Report post Posted May 21, 2012 Cheers for all the inputs guys, seems the juries very much split on whether they do anything. I'm just looking at options to put abit more lead in her pencil. She's mint and 100% NZ new original so am reluctant to consider major mods, though I'd consider minor reversible upgrades that stick close to original. Ideas? Obvious go to is exhaust but she sounds real original sweet as she is. Thnx. Quote Share this post Link to post Share on other sites
antil33t 90 Report post Posted May 21, 2012 Get it remapped by Gavin @ Hi Velocity. Maybe some "Waneys" headers. Or just stick Konis in it. Quote Share this post Link to post Share on other sites
E30Conman 0 Report post Posted May 21, 2012 Get it remapped by Gavin @ Hi Velocity. Maybe some "Waneys" headers. Or just stick Konis in it. Hey Cheers for that, I look into it and pass on progress, results etc !! Quote Share this post Link to post Share on other sites