Maintenance Discuss common Lexus maintenance questions here.

Questions on oil and gas

Thread Tools
 
Search this Thread
 
Old 02-08-10, 03:10 PM
  #16  
mitsuguy
Maintenance Moderator

iTrader: (2)
 
mitsuguy's Avatar
 
Join Date: May 2005
Location: AZ
Posts: 6,388
Likes: 0
Received 24 Likes on 21 Posts
Default

Originally Posted by Joeb427
Though not 10-20 HP.
Only 4 and a bit more torque.Still worth it.
You'll never convince the 87 users.
They spend big $$$ and buy a Lexus and then skimp on octane.
They know more than the engineers.
You can use 87 but to get the best performance and MPG,premium is the choice.
assuming you actually tested it, remember that the ecu can pull timing a ton, so, if you had some real bad knock from low octane, it may be less or more than even when you tested it...
Old 02-08-10, 05:09 PM
  #17  
Merwin121
Driver School Candidate
iTrader: (2)
 
Merwin121's Avatar
 
Join Date: Aug 2009
Location: MA
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Default

Good point. Stubbornness is a bad trait to have. I've had the car for 5 years and I've been using 87 octane ever since. Maybe for my next car I'll switch to premium.
Old 02-08-10, 09:39 PM
  #18  
CallMePat
Driver School Candidate
 
CallMePat's Avatar
 
Join Date: Feb 2010
Location: GA
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Joeb427
Though not 10-20 HP.
Only 4 and a bit more torque.Still worth it.
You'll never convince the 87 users.
They spend big $$$ and buy a Lexus and then skimp on octane.
They know more than the engineers.
You can use 87 but to get the best performance and MPG,premium is the choice.
Not only that, but to preserve the longevity of the engine since it is high compression, the premium is recommended. The car ECU needs to see the extra octane to prevent knock like mitsuguy said. Trust the DSM guys, we know about knock and octane points

I use 93 in my 94 GS300. I havent changed the oil yet (just got it a week ago, changing it sometime in the next week). I plan to use Mobil1 5w30 full synthetic. Im used to using only Mobil1 full syn with 93 octane from my DSM's, so I dont mind giving the GS top notch products. No need to skimp on a few bucks now, because doing so will cost you more in the long run.
Old 02-09-10, 04:58 AM
  #19  
mitsuguy
Maintenance Moderator

iTrader: (2)
 
mitsuguy's Avatar
 
Join Date: May 2005
Location: AZ
Posts: 6,388
Likes: 0
Received 24 Likes on 21 Posts
Default

Originally Posted by CallMePat
Not only that, but to preserve the longevity of the engine since it is high compression, the premium is recommended. The car ECU needs to see the extra octane to prevent knock like mitsuguy said. Trust the DSM guys, we know about knock and octane points

I use 93 in my 94 GS300. I havent changed the oil yet (just got it a week ago, changing it sometime in the next week). I plan to use Mobil1 5w30 full synthetic. Im used to using only Mobil1 full syn with 93 octane from my DSM's, so I dont mind giving the GS top notch products. No need to skimp on a few bucks now, because doing so will cost you more in the long run.
those little engines were really picky with fuel! amazing what some MS109 and 25 lbs of boost on a 20g will do though!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
azkaty
SC430 - 2nd Gen (2001-2010)
54
07-27-13 04:10 PM
Joaniem
ES - 5th Gen (2007-2012)
25
11-07-09 09:32 PM
baddis es
Car Chat
7
07-15-06 07:07 AM
spxChrome
LS - 1st and 2nd Gen (1990-2000)
2
02-25-03 09:50 AM
FusionMan79
LS - 1st and 2nd Gen (1990-2000)
6
09-01-02 12:17 PM



Quick Reply: Questions on oil and gas



All times are GMT -7. The time now is 09:39 AM.