Has anyone tried using 20W-50 conventional oil to reduce oil consumption ? Did it help ?

Thanks.

My SRX doesn't consume oil, but I have other low mileage, late model cars that do. Owner's groups for various different car manufacturers swear that different brands (not weight or viscosity) of oil will also reduce oil consumption. I have been experimenting and will try to follow your post. www.bobistheoilguy.com is a good reference.

Thus far I have only concluded that synthetic does stay cleaner longer. I am currently trying the "German Castrol" Syntec in a 0W-30 weight (labeled "European Formula" on the bottle) in another car (a turbocharged Subaru) that also specifies the 5W-30 that the Cadillac SRX V-6 requires. Based on Castrol's tests, it closely resembles their standard 10W-40. Good luck and report back.

This may sound dumb, but did you try not adding oil? I've found a couple times the oil level will hold steady once it gets to a certain level. Wouldn't hurt to watch it for a while.

Good idea, unfortunately I tried that and ended up adding almost three quarts, no oil light however.

I ran German Castrol 0w30 for 6k miles and I was down a quart. I have an 05 AWD V-6 and it ran pretty good on the GC. This time around it received 0w30 M1 and like you'll hear on the bobistheoilguy site, the engine is slightly louder using the M1 than GC.

As a point of reference on the Subaru, the German Castrol DID NOT appreciably reduce oil consumption, if at all. It was also not labeled "Energy Conserving". Some forum members claim the lower viscosity energy conserving oils burn off. Generally-speaking, the API-certified SL and SM oils are both low phosphorus (anti-wear additive) for longer catalytic converter life; SM oils which are labeled "energy conserving" are high molybdenum for anti-wear.

The "fuel-efficient" oils are the factory recommendation in most cars. It's not clear these "maintained low viscosity over time" oils lead to the longest engine life, but it is clear these oils help the car companies meet their CAFE federally-mandated fuel economy standards.
My next experiment will be with an SM energy conserving 20W-50. I will keep you informed.