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740, 940: fuel grade requirement?

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
1983 - 1992 740
1982 - 1991 760
1986 - 1991 780
1990 - 1998 940
1990 - 1998 960
1997 - 1998 V90/S90

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CIK7
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Year and Model: 95 854T & V70trailer
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740, 940: fuel grade requirement?

Post by CIK7 »

I use 91 octane for my v70 nearly always. I think I did the same with my 960. But do the redblocks require 91? Is 87 safe in the redblocks? Would be nice to not have to buy 91. Im trying to sweep my v70 away in order to buy a 945 auto. Come to think of it, itd be kinda cool to put a custom redblock in a 965. There will never be anything like my 960...alas!

Be sure to reread my manual v70 ad if you are looking for one of those. Price is down. Make an offer!
95 854 Turbo 258K, auto, current
09 Rav4 Ltd3.5Fwd, red, 208K, current
98 V GLE/SE red, 379k (277k), 5sp, trailer in progress...
05 CRV EX AWD, Navy, 170K/184k, sold
03 Accord 2dr V6 silver, 196K/214K, 6sp, t-boned, sold
98 S GT white, 175K, 5sp, sold
96 964 silver, 146K, diff&trans/engine self-destr, crushed 😭
98 XC black, 151K, flooded&bent rod, crushed
01 V Base white, 168k, traded for XC
09 Impala LT1 gray, 196K, sold for 01

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