flaco Posted September 30, 2011 Share Posted September 30, 2011 I have been using regular gas in my 99 LS400 for a while now, mainly due to the cost and the car runs really well, no knocking, very smooth, good pickup. However recently the engine light came on and I found the Po171 problem. I know generally what that means and a few things that can be checked but the question here is: Is this due to the use of low octane gas and will it harm anything else? There is also a strong smell from the exhaust. Car still runs smooth. Quote Link to comment Share on other sites More sharing options...
billydpowell Posted October 1, 2011 Share Posted October 1, 2011 I have been running regular for years, no odors or problems. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.