Originally Posted By: Apollo14
Originally Posted By: Tdbo
I had a 2000 Taurus that had 275K on it when I sold it.
When I went in for an OC, I always got the speech that Ford back specked it for 5w20 and that is what I should use, regardless that it went over 200K on 5w30 just fine.
One time, I gave in for excrement and laughter and allowed them to put 5w20 in it.
It was the last time as the car (that never used more than 1/2 qt during an OC) used 2 qts. Went back to 5w30 and returned to the 1/2 quart or less.
So after 200k on 5w30, there was enough wear that the specified 5w20 had a high rate of consumption. And you conclude this is the fault of the 5w20? On the contrary, the consumption rate you are seeing is all to do with 200k on 5w30.
Please note that I am not making a value judgement here that one oil is better than the other. Indeed, your engine may have worn even more if you had run 5w20 for 200k. Equally it may have worn the same or it may have worn even less (there are people here reporting zero consumption after using xw20 for similar miles).
We can't say anything definitively. But we certainly can't prove the cause and effect that you did from the information you presented.
No, I said that after putting in 5w20 in my car, I experienced increased oil consumption. After returning to the 5w30 that was the spec when the car was designed and built, oil consumption returned back to normal levels, prior to the introduction of the 5w20.
Without a doubt, on an engine with 200+K, there is going to be wear. My theory is that the 200K miles put on the car had something to do with the consumption rate, regardless of whether not it was run the 30 wt or the 20. I at no time assessed blame on the 5w20. I merely relayed my experience, per the title of the thread " 5w20 users over 150,000 miles, speak up!"
However, if I still owned the car, I would run 5w30 in it.