Changing Differential Gears For Better Mileage

[n/a]

Has anyone changed the final drive cogs for better mileage? I have in mind a subtle change in an effort to make the car a bit longer legged.
Thinking of commuting in my 230SL Automatic in Southern California.

230SL

[Cees Klumper]

I replaced my 4.08 with a 3.69 rear axle (complete swap - the cost of the cogs and the time to change them out exceeds the cost of a good used complete rear axle) and it resulted in 'longer legs'. However I suspect the effect on the mileage would be quite small. And in your case, changing to a 3.69 would not be worth the trouble. There is the possibility of going lower still, but you would need a sedan rear-end and if you have an automatic, that would for sure make the car pretty sluggish on take-off. I would stick to what you have.

Cees Klumper in Amsterdam
'69 white 280 SL automatic

[n/a]

Thanks Cees...After what I've learned here I think I'll keep it as is.


230SL