rfcbuf Posted February 20, 2011 Share Posted February 20, 2011 I have a 1998 GS400 and wonder about any harmful effect of using 91 octane gas that has 10% ethanol.If the gas can cause damage what can be used as an additive? Quote Link to comment Share on other sites More sharing options...
MrDog2000 Posted February 27, 2011 Share Posted February 27, 2011 I have a 1998 GS400 and wonder about any harmful effect of using 91 octane gas that has 10% ethanol.If the gas can cause damage what can be used as an additive? Where I am, one station sells 90 octane regular with 10% ethanol. I've been using it for two years with no adverse affect on how the car performs. The car manufacturers all seem to agree that 10% poses no issues. Quote Link to comment Share on other sites More sharing options...
rlr001 Posted March 9, 2011 Share Posted March 9, 2011 I use E10 too, and seems to not effect the car negatively. However, I found a station that sells 100% gasoline, at slightly higher price, and i am going to start using that and see if it improves performance and mileage. Everything I have read says you should see 2-5% improvement in MPG with pure gasoline verses 10% ethanol mix. Quote Link to comment Share on other sites More sharing options...
Mike813 Posted March 23, 2011 Share Posted March 23, 2011 im from NYC where 100% of our stations are now 10% mixed and I do frequently drive out to NJ where only a handful of stations started to use the 10% mix. from comparison there is a slight drop in MPG (NYC gas 14-16 mpg, NJ gas 15-17 MPG) but not enough to really notice any performance losses. Quote Link to comment Share on other sites More sharing options...
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