27 mpg/75mph 800 miles on Amsoil 0-30 last weekend

[rnrn]

Popped in the 0w-30, got a few more miles out of a tank. Any M60 owners getting similar hwy results?

[digitaldragon03]

i can get 27 if there are no other drivers on the road. Otherwise, i usually have to brake a bit after someone cuts me off (SoCal Drivers) and then accelerate back up to speed. Normally on the highway i will get 22-24 mpg.

[stx133]

i used to run Amsoil in my Rotary, good ****. havent got that far on the 540 yet, still running the standard synthetic my mechanic uses.

[Tiger]

What is your City MPG?

[onewhippedpuppy]

Wow, I was getting 25 hwy on the mystery oil that came in the car, seems about the same with the Mobil 1 0/40 I just put in. What were you getting before the Amsoil?

[ra_pro]

I get that on Castrol Synthec 5-50 when I maintain speed at 75-85 mph.

[Derek A.]

I can't crack 20 mpg on the freeway (according to the obc) then again I am rarely at 75 mph

[632 Regal]

I can get 33mpg with gearlube in the engine.

[alr]

I ahve been getting 23 -24 combined driving with mobile 1.

[rnrn]

overlooked from maintenance perspective. also running ITG air filter and d'sylva's chip with BP or Mobil 93. amsoil in the diff too. i was at 25 mpg hwy before the switch, same driving.