• Reply

#6 of 8 oil changes by hyundai_slsmn

Jan 17, 2007 (4:17 pm)

I do add a quality fuel inj. cleaner to tank every 10,000 miles, and regular oil changes at 3-4,000 miles.
 
with a 7qt oil pan that is a complete waste of money and oil. I have gone every 10k between oil and filter with Mobil1 and the engine has 95k and still gets 32 hiwy mpg 60mph and usually a 28 combined overall
 
as far as the gas goes I would stick with atleast 91 octane. these engines have a type of vvt system that will actually be deactivated if the ecu senses too low an octane of fuel. if the butterflies in the intake do not open and close often enough they will stick and become useless and the engine will run like crap

• Reply

#7 of 8 Re: Jaguar X-Type: What's the Best Gasoline to Use? [Mr_Shiftright] by dfciii

May 30, 2009 (1:18 pm)

Replying to: Mr_Shiftright (Nov 05, 2006 2:04 pm)

Replies to this message:

• Mr_Shiftright (May 30, 2009 2:06 pm)

• Reply

#8 of 8 Re: Jaguar X-Type: What's the Best Gasoline to Use? [dfciii] by Mr_Shiftright HOST

May 30, 2009 (2:06 pm)

Replying to: dfciii (May 30, 2009 1:18 pm)

The car's computer can adjust the engine time to accept a lower octane fuel. That's what the knock sensor is for. They can't void your warranty for that. If they claimed the gas caused the engine damage, they'd have to explain why the computer failed to protect the engine as it should have. Further, they'd have to prove the engine damage was the direct result of using a couple points lower octane. Lotsa luck proving that. It's not like you're trying to put diesel fuel in there or racing gas.
 
You can't harm your engine using pump gas, say 87 or 89. What changes is your performance. The car will be more sluggish and you'll probably press on the gas more, thus negating the money you saved using lower octane!