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LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Octane booster: when to add

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Old Dec 25, 2022 | 09:09 AM
  #31  
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PhilipMidd
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From: Western Australia
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Originally Posted by 400fanboy
I also find it strange how you ran into issues even just driving... normally.
From what I remember, and note, it was about 4-5 years ago.
I didnt really notice any lack of power at the time, and the knock only really happened when I was taking off from stopped.
I drive hard, but not fast (except for that one speed run, done on an unrestricted road in the Northern Territory of Australia).
Unless I'm lined up with some idiot thats got something to prove, I'm usually the first off the line at lights, but I dont gun it. I dont speed, I just get to speed quickly, then for the most part I coast.
So most noticeable at low revs, low vacuum & high excellerator input (or low revs & high load).
At the time I did that fuel mistake, I was taking it easy for the most part cos, like on most long distance trips I do, I like to check on car economy, so I tend to take it a little easier for the trip to see what I CAN get out of a tank of fuel.

Originally Posted by 400fanboy
I didn't realize the engine was that highly tuned even in that environment.
Er, neither did I. I have not done anything to TUNE IT UP. Just maintained it well. It does go well thought, better than I would expected for a 33 yo vehicle.

Originally Posted by 400fanboy
I don't know of any issues just putting octane booster in the engine, even in the long-term. It's the same thing that's added to the premium gas AFAIK. Just more expensive since you're buying it by the bottle.
Neither do I know of any issues, just checking before I commit. It does work out cheaper to do this for me (at least at the moment because of the massive and "unjustifiable" difference in price between RON91 and RON95 (Regular and Premium) in Australia

Thank you for your reply.

Last edited by PhilipMidd; Dec 25, 2022 at 09:21 AM. Reason: Terminology change.
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