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Through a winter run of this oil, temps 0F at times and a lot of cold starts, it used 10 ounces in a 940 Turbo, which is the first time this car used any oil. The sudden usage I attribute to the numerous cold starts with a "0" weight oil. Previous oil fill was M1 10-30, dino 10-30's earlier. On the plus side with this 0-40 weight the engine ran the smoothest and quietest (including noiseless COLD startups) that it ever ran on any oil in its life of 107K. Oil analysis revealed wear metals were basically cut in half compared to the M1 10-30 previously used at the same mileage interval. In 3,600 miles it sheared down to a very high 30 weight, which is a characteristic of this particular oil. This is not a problem with me. Continued usage and with additional miles the oil will slowly thicken back up to about it's original viscosity - a mid to low 40 weight. Will I use it in the future? Probably, since the car performs so well with it, but I have to try a run of Redline 5-40 first, just to see how it works out.
The 0-40 is still in, over 4K now, with a first time load of "Auto-Rx" added to slowly and safely clean out the internals for several hundred miles before the change to Redline. The level of solids in 3600 miles indicated that the oil was cleaning up the internals and using up it's additive properties. I suspect the ring pack is being cleaned. In your case absent tailpipe smoke, leakage, or cheap oil burn-off, the ring pack may possibly be the cause of your excessive usage. Auto Rx is safely used in many low and high mileage engines with this trait, including certain Toyota engines, Saturns, and Cadillacs to name a few.
In your particular situation your engine would most likely benefit greatly from Auto Rx. It isn't snake oil, it's cheap for what it accomplishes. Visit the site Auto-Rx.com.
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92-944, 94-944, 97-960 - Silverstar headlights, Green Diamond Tires
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