Quagmire Posted August 2, 2009 Share Posted August 2, 2009 Guys, I run LPG 99.9% of the time, only switching to petrol when i run out of gas (which is rare). In the warmer weather i start on gas too. I know that you cannot "read" plugs on modern unleaded like you could with old fuels. I am assuming that LPG gives no indication whatsoever! I am running a closed loop system so my mixture on gas should be more or less correct. However my plugs are white : Is this OK? This is in a 9.35:1 RV8. Cheers Quote Link to comment Share on other sites More sharing options...
Les Henson Posted August 2, 2009 Share Posted August 2, 2009 Slightly off white is ok - there's almost no residue from the burn on gas. I've changed engine oil on LPG engines and it's almost as clear as the stuff going in. Les. Quote Link to comment Share on other sites More sharing options...
Lara Posted August 2, 2009 Share Posted August 2, 2009 And remember that with LPG a "lean" mixture is actually colder than a "rich" one! which means Rich = danger!! Lara Quote Link to comment Share on other sites More sharing options...
Quagmire Posted August 2, 2009 Author Share Posted August 2, 2009 Slightly off white is ok - there's almost no residue from the burn on gas. I've changed engine oil on LPG engines and it's almost as clear as the stuff going in.Les. Funny you say that, i also took a peek under the rocker cover whilst i was tinkering, and was pleasantly surprised at the colour in there. The engine has done about 12k since i rebuilt and fitted it in Novemember. I run with classic green 20/50 and change the oil religously every 3000 miles. This picture was taken yesterday and the oil is due to be changed next week. Quote Link to comment Share on other sites More sharing options...
Diff Posted August 4, 2009 Share Posted August 4, 2009 Guys, I run LPG 99.9% of the time, only switching to petrol when i run out of gas (which is rare). In the warmer weather i start on gas too. I know that you cannot "read" plugs on modern unleaded like you could with old fuels. I am assuming that LPG gives no indication whatsoever! I am running a closed loop system so my mixture on gas should be more or less correct. However my plugs are white : Is this OK? This is in a 9.35:1 RV8. Cheers They look fine to me for LPG. No sign of burning etc., so if it runs well, don't fret. However, I wouldn't be using champions. I prefer NGKs Regards, Diff Quote Link to comment Share on other sites More sharing options...
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