The Brickboard

BrickBoard Archives

The files contained in this listing have been automatically archived from the active forums. Because the vast majority of posts are now in one place, this archive is considered legacy. You should use the SEARCH feature OR choose your topic and select date tabs within the forum you choose.


Re: Fuel Grade?[V70/1998] posted by abe crombie on
Sunday, 3 May 1998, at 11:15 p.m.

All Volvo gas engines since 1986 have had knock sensor function in ignition that will adjust to lower octane fuels. This adjustment comes at the expense of lower performance and lower MPG for most persons. The sensitivity to lower octane is greater for turbo engines. There is also a lowered level of fuel imjector/valve cleaning detergents in the lowest octane fuels of many suppliers.
I can tell the difference between 87 and 89 octane in any weather and I seem to be able to detect a difference between 89 and 92 in hot weather or when heavily loaded on late model 850 non-turbo cars that I've driven. If you drive aggressively then 92/93 is a good idea. If you drive long distances on highway lightly loaded then the 89 octane is probably your best value. I wouldn't use 87 as it would likely result in more fuel usage and more internal engine deposits in the long run.




 


©Jarrod Stenberg 1997-2016. All material except where indicated.



Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.

Powered by Denizen Motive Forum - Custom Software for Volvo Enthusiasts