Northstar Engines and System Technical Discussion Discussion, northstar eldo fuel in Cadillac Engine Discussion; I read somewhere that newer eldos can use regular fuel as opposed to premium. Does anyone know what year that ...
I read somewhere that newer eldos can use regular fuel as opposed to premium. Does anyone know what year that began? Also, I read somewhere that northstart engines that are made for premium fuel can use regualr without adverse effects. Thank you.
Automobile(s): White Diamond '03 DHS (with DTS floor shift)
Re: northstar eldo fuel
In 2000 they lowered the compression ratio to alow regular fuel. The pre 2000's "recommend" premium but the Northstar has a very effective knock sensor and will run quite well on regular. It will sense a spark knock long before you hear it and retards the timing appropriately. In theory you will loose some performance but I have switched to 87 over 2 years ago and have noticed no degredation in performance or fuel milage. If I were going to race it I would use 93.
A lot of you people suggest using 87 octane. TRIED IT---DON'T LIKE IT----for the extra $3 or $4 per tankfull I will go with the 93 Octane. Personally, I think my Eldo runs 100% better with a good brand name premium fuel. To each his own, I guess.