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Old 02-27-19, 04:32 PM
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Redline007
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Hello everyone I got a quick question I am considering get the IS 300 and I wanted to know if you can put
regular 87 octane gas in the car

Thank you
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Old 02-27-19, 04:50 PM
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mexicanzer
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No, unless it's the absolute only fuel available and you don't want to get stranded. If you don't run 91, you'll likely get worse fuel economy and can end up with other issues that will cost you money offsetting any savings from running cheaper gas. And power will be reduced.
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Old 02-27-19, 08:54 PM
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arentz07
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Originally Posted by Redline007 View Post
Hello everyone I got a quick question I am considering get the IS 300 and I wanted to know if you can put
regular 87 octane gas in the car

Thank you
Hello and welcome.

It's a valid question, since some cars "recommend" premium but do not require it. However, the owner's manual for the IS 300 states that premium fuel is required. If you must use 87, it is recommended to fill up with 91 as soon as you empty the tank.

This topic has been discussed in the past MANY times on this forum. For example: https://www.clublexus.com/forums/is-...d-threads.html
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Old 02-27-19, 11:50 PM
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I wouldn’t risk it with a car that requires premium (91 octane minimum). Sure it might not get damaged if you do it once but over time if you used regular I’m sure it wouldn’t be good.
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Old 02-28-19, 04:47 AM
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91 Shell
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Old 02-28-19, 05:54 AM
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I fill up with 93 Shell every time. Luxury Car = Luxury Gas
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Old 02-28-19, 12:42 PM
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91 SUNOCO. "The official fuel of NASCAR"
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Old 02-28-19, 02:58 PM
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I really hope this thread does not turn into a "Which gas is best gas?" thread. I think OP's question has been answered.
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Old 03-01-19, 09:05 AM
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91 shell!!
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Old 03-01-19, 09:53 AM
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93 all day every day. 89 87 is only put in if the zombie Apocalypse hit and there is no other choice.
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Old 03-01-19, 11:04 AM
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Originally Posted by SSworks View Post
93 all day every day. 89 87 is only put in if the zombie Apocalypse hit and there is no other choice.
I wish 93 was more widely available here in KC. I know of like two gas stations that have it, and both are BP, both are expensive, and both are out of the way from my normal commute.

Anyway like I said, don't want to get off-topic, as 87 is clearly not recommended for this car.
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Old 03-01-19, 02:16 PM
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Originally Posted by arentz07 View Post
I wish 93 was more widely available here in KC. I know of like two gas stations that have it, and both are BP, both are expensive, and both are out of the way from my normal commute.

Anyway like I said, don't want to get off-topic, as 87 is clearly not recommended for this car.
You won't really get much of a benefit from 93 unless you tuned the car for 93 which our cars are factory tuned for 91. I only use 93 because in Atl and the south in general we only have 93 no 91. Here in Germany, the bases for some reason carry 90 (why not just do 91? lol) and 93 so obviously I go with 93.
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Old 03-01-19, 02:45 PM
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Top tier 91 / premium gas always.
got to Costco or even Arco if you need to save money but don't degrade to 87.
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Old 03-02-19, 02:35 PM
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I only use 93oct. Shell V-Powaaaaaaaa
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Old 03-06-19, 07:22 AM
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Originally Posted by Flash5 View Post
You won't really get much of a benefit from 93 unless you tuned the car for 93 which our cars are factory tuned for 91. I only use 93 because in Atl and the south in general we only have 93 no 91. Here in Germany, the bases for some reason carry 90 (why not just do 91? lol) and 93 so obviously I go with 93.
In Germany I usually can get 98 at almost any Shell station. This is available due to all the Porsche's, Ferrari's, and Lambos.Other than that, almost all gas stations around me here in Germany carry 93.
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