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09/06/2021 9:51 pm
Topic starter
I know that many luxury cars want you to put 'premium' gas in them, but is it really necessary? Will using regular gas cause any long-term issues? The specific car I have in mind is an 07 Lexus is250 with a little over 100k miles on it.
2 Answers
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09/06/2021 9:55 pm
If the manual says "Premium Required", you have to run it.
If the manual says, "Premium Recommended", you can run lower octane but will lose MPG and performance.
Long term use of low octane fuel in a motor designed for high octane will damage the motor.
Do not buy a premium luxury sports car if gas expense is a concern....that would be the best advice.
1
09/06/2021 10:06 pm
Do a search on this forum to see past answers. But here is one example:
https://carkiller.com/scottykilmer/qa/do-i-need-premium-gas/
