RON 97 or RON 95 for turbo?

[S4TR14^TURB0]

ive been using ron95 since it was lauched, the hydraulic tappets sounds much louder,
slight power decrease.
shell - ok, but tappet sound still there
petronas - no, tappet sound bloody loud, no power.
BHP - havent tried
caltex - yes, recomended, tappet sound decreases
mobil/esso - havent tried.

rm10 - ron95 - 50km
rm10 - ron97 - 45km.
**city driving.

i have the same problem, normally im just pump ron97, but one day my fuel was running out and i have to go to the nearest petrol pump, but too sad that petrol pump doesnt have ron97, so i pumped ron95 into my car and thnx a lot, my tappets sounds like hell, and now i pumped back ron97, the tappets sounds still there, but sometimes has, sometimes dont have, thnx to ron95

 

[Kennydydy]

how about ron 95 for auto 4G63T???

is it cant boost??
or lacking??
or engine kong??

 

[veilsideboyz]

Ron97 better ~~

 

[turbolover]

Ron97 better ~~

Definitely but it's gonna cost more come May.

 

[Dayline668]

Ever try mixing it..? Trying now.. better then just pump 95, can feel the diff..

 

[veilsideboyz]

Definitely but it's gonna cost more come May.

I think the cost still the same...just for the above 1.8lt NEED to pump 97...below 1.8 can pump 95.....

 

[jeffayn]

the diff 95 n 97 is not significant.. but mixing up different petrol is a good idea.. why ? because diff gasoline contain different additive and detergent...

 

[turbolover]

I think the cost still the same...just for the above 1.8lt NEED to pump 97...below 1.8 can pump 95.....

You got inside information ka?If like that good for rotary owners.

 

[Syahz]

On the 95octane i do a research on the dyno only can boost max 1.5bar and 12.0AFR.If lower the power go down.If u rich the fuel,torque go down.And i try to mix little Ethanol,the power jumping at same boost.