Three "simple" questions from a newbie...

[scharfg]

Hi there folks just went on my first ride on the '83 GS750ES. Boy was it fun!

I want to change the oil and it says 20-50W on the oil filler cap. I use diesel 15-40wt in my other bike (2005 Kawi 1500 Classic cruiser) as the Kawi Vulcan forum highly recomends it over regular oil (better detergents).

Can I use the Rotella Shell 15-40wt diesel in my GS....?

Also what is the fuel capacity of the 750ES tank....?

I was only getting 37 m/gal on my way home there was some up hills and I was doing ~140km in spots but that seems a wee bit low.

What are other folks getting on the HWY for fuel milage?

Thanks in advance!

[JHawkins]

Rotella should be just fine, it's what a lot of folks are using around here, including me!

As for the mileage, is that US or imperial gallons? If I do over 110 clicks I get about 37 or 38 mpg US. If I do 80 or less I can get over 50mpg US

[Clone]

Your bike is an interesting one, I have an 83 and the cap says, 10W-40. Yeah, use 15W-40 if it makes you happy. I mainly run synthetic because it pulls the temperature down a little, and I get more time between changes. I get right around 18km/L in the city and just over 20km/L on the highway. I switch to reserve usually right at the red area for reserve on the gass guage(this is where I run out of gas too), I can then run in 15 Litres. I also run Regular 87 octane. I actually find I get less distance out of a tank if I run a Mid-grade or Premium. Enjoy your bike.

[fgh]

Hi there folks just went on my first ride on the '83 GS750ES. Boy was it fun!

I want to change the oil and it says 20-50W on the oil filler cap. I use diesel 15-40wt in my other bike (2005 Kawi 1500 Classic cruiser) as the Kawi Vulcan forum highly recomends it over regular oil (better detergents).

Can I use the Rotella Shell 15-40wt diesel in my GS....? Yes! Good oil for a bike!

Also what is the fuel capacity of the 750ES tank....? Mine is a US model and holds 4 to 5 gallons (US). Have to look at the spec when I get home.

I was only getting 37 m/gal on my way home there was some up hills and I was doing ~140km in spots but that seems a wee bit low.

What are other folks getting on the HWY for fuel milage? When doing the speed limit (70 mph or less) a little over 40. It'll go up as I slow down and down as I speed up. Overall 30 to 45.

Thanks in advance!

Can I use the Rotella Shell 15-40wt diesel in my GS....? Yes! Good oil for a bike!

Also what is the fuel capacity of the 750ES tank....? Mine is a US model and holds 4 to 5 gallons (US). Have to look at the spec when I get home.

What are other folks getting on the HWY for fuel milage? When doing the speed limit (70 mph or less) a little over 40. It'll go up as I slow down and down as I speed up. Overall 30 to 45.

[nabrams]

Yeah, mileage can vary wildly depending on:

1. How long you warm up the bike (especially if you make a lot of short hops).
2. How high you rev before shifting into next higher gear.
3. Cruising speed on highway.
4. How much stop-and-go traffic you encounter.

Your 37 MPG sounds reasonable.

[Mark whiz]

Your '83 has the same specs as my '85 700.......it's a 4gal tank - but you can usually squeeze a tad bit more in it if the gas pump works slowly.

After reading a lot here on the Forum and doing a little research on the Rotella T Oil, I'm thinking that may well be about the best option or at least the best AFFORDABLE option for oil. I've always used Mobil 1 or Amsoil in my GS, but I think that is changing to Rotella on it's next change.

As far as mileage goes, I get 50 to 52 mpg these days commuting to work, which is 33 miles each way of 95% open highway driving at 55 to 60mph. If I hold the rpm's down to 4000 or less (50mph with stock gearing) I can get 58 to 60 mpg. That said, I got a light throttle hand these days with gas prices the way they are - but to be honest, in the 21 years I've ridden this bike I don't think I've ever gotten worse than 40-45 mpg even when I romped on it pretty hard.

[Clone]

I so gotta agree with mid or low 40s and up into the 50s, 37 is not good for a 750. Your tank will hold 15.5L and if you get into the reserve, more, total is 19L.

[scharfg]

Wow you folks are great thanks so much for the perfect info/answer to my questions. Good to know I have 15L on main and another 4L on reserve. So at a conservative 40mpg one should get ~270km/tank or ~170 miles/tank. Start looking for a station at ~250kms eh....

Also good to know about the Rotella oil option. My left foot was wet on my inogeral trip as my stator case is leaking a bit when it warms up so I'll change out the gasket when I change up the oil and filter.

Thanks again folks and have safe riding!