ygmn,,,
True, you SHOULD be ok... I need to play devil's advocate here, sorry
The last thing you want is an improper injector spray pattern. Especially with the propensity for oem's to make leaner running engines. A poor firing injector can cause so many problems with emissions related items, lean combustion chambers that can cause damage eventually, detonation (which is not always audible), excess combustion chamber heat, it goes on... There are SO MANY things that rely on a full healthy spray pattern of the injector, and most are detrimental to the life of the new engines we have...
Knowing this, I am not comfortable in saying, "we should be ok with the new fuels." ... It's just too much for me to gamble ... I think a good injector cleaner like B12 Chem-Tool is pure insurance to a healthy injector spray ...
*** Contrary to belief, the PCM will NOT detect a low to moderate loss in injector spray pattern... It WILL detect a cylinder "that's not like the others" via the Hall-Effect sensor/s, but at that point, you have run lean or have had low grade mis-fires for a while, and that's what we want to avoid... Keeping the injectors at 100% spray effeciency is the goal !
Moreover, when injectors get dirty, it's usually a progression over time, and we may not "notice" the performance decrease ... If you could "pull" them for inspection as you can with a spark plug, then you could prevent a bad thing from happening... They never get pulled, so you need to assume they are ok, but the truth is, GM injectors are a NOTORIOUS breed of injector that sees fouling quite easily; unlike Import injectors... Doing a $2.38 can of Berrymans B-12 is no big deal every 4,000-5,000 miles considering the risks of a fouled or in-effecient injector... Plus, the fuel effeciency you might retain will probably off-set the cost of the cleaner... Keeping the carbon build up to a minimum in the LS1 based motors is also a good thing... I notice a significant difference in performance, and idle quality after every can of Berrymans B-12 every 4,000 miles... They must be getting at least a little dirty if I can feel a difference... I also live in an area where RFG Fuel is a requirement, and it's one of the cleanest burning gasolines available... So, go figure...
11H