Question about 1992 Lexus Ls 400
I have about 158,800+ miles on my 92 Lexus LS400 and for about maybe 12+ years i dont think i have ever put any other gas in but regular....i am ashamed to say this but hey with gas prices you gotta get by. But would it be better to mix low an high octanes in my tank then just running straight regular?
There is no advantage in mixing fuels If the car is tuned to run on regular leave it at that as the computer has been set for that fuel. Check with a dealer and find the recommended fuel for your vehicle . By going to a speed shop that has the ability to reset you cpu to a higher/lower fuel rating you can retune the motor. But if you are running on the recommended fuel leave it alone. It will be cheaper in the long run
Posted on May 05, 2013
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Posted on Jan 02, 2017
Well, of course premium is HIGHLY recommended, but it is not necessary.
You can use regular grade in your engine and it will not harm it at all. Modern engine management systems have knock sensors that detect lower grade fuel and make the necessary adjustments to your timing and fuel delivery systems.
All you will notice is slightly slower acceleration and a slight drop in engine horsepower.
Hope this helps...
Posted on Mar 23, 2009
SOURCE: Loud engine or Muffler
hi. if the muffler is truly cracked, it will release a loud, unfiltered, noise during acceleration and idling as well. it will rattle as well. i recommend replacing the muffler ASAP.
Concerning the fill up at 7-11, there may have been a high water content that was in this gas stations tank and, this was transferred to your tank during the filling. the Lucas treatment will remove the water out of the tank and correct any damage that may have occurred,if any..
Posted on May 16, 2009
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