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Discussion Starter · #1 ·
I was wondering when should i go fully synthetic oil on my F? What brand is best? Should i do my own oil change and avoid the $156 service charge? My F have 6231 miles on it after 2 oil changes and still breaking in on my Joe Z exhaust :D
 

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Hi guys this is BJG403.I have a 09 blk&blk isf I was talking to my lexus rep, and he told me a few guys were complaining about a hesitation off the line.He told me lexus are now using synthetic oil in f car and reprogaming the computer and it took the hesitation away.And if you are experienceing that lexus will change it at no cost to you.
 

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Hi guys this is BJG403.I have a 09 blk&blk isf I was talking to my lexus rep, and he told me a few guys were complaining about a hesitation off the line.He told me lexus are now using synthetic oil in f car and reprogaming the computer and it took the hesitation away.And if you are experienceing that lexus will change it at no cost to you.
Is there a Bulletin for this? any recall number? I dont mind having a free oil change. lol
 

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i dont understand how or what they would need/use to reprogram the ecu. its not like they can just give it a power bump in the low rpm. if it was that easy im pretty sure there would be a chip or something out for the isf...
 

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I use Eneos Synthetic 5w30 for my 09 IS F. I'm currently near 21k miles. Buy synthetic for the piece of mind...not for performance gains (which it will not yield).
 

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My guess is that most on this board will go synthetic, but at a 5000 mile oil change interval, I'm not sure it will not matter at all. Remember, the IS-F has a 10 qt sump as well as oil coolers and a scavange pump, things that allow dino oil to protect better by itself. My guess is that more protection gains from hard/track style driving would more likely be seen from a thicker oil such as 10w-30, a high mileage 10W-30, or a 15W-40. If you really run the lexus hard, a synthetic like redline would be a good choice. For daily driving, there is no benefit from synthetic in the IS-F with a 5000 mile oil change interval.
 

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Discussion Starter · #8 ·
My guess is that most on this board will go synthetic, but at a 5000 mile oil change interval, I'm not sure it will not matter at all. Remember, the IS-F has a 10 qt sump as well as oil coolers and a scavange pump, things that allow dino oil to protect better by itself. My guess is that more protection gains from hard/track style driving would more likely be seen from a thicker oil such as 10w-30, a high mileage 10W-30, or a 15W-40. If you really run the lexus hard, a synthetic like redline would be a good choice. For daily driving, there is no benefit from synthetic in the IS-F with a 5000 mile oil change interval.
I agree with you on this. I don't run my car hard all the time and besides I take this only on weekends and three seasons. So going to synthetic, I'm not sure if i can tell it makes a difference.
 
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