Sounds like you made a good choice!
If you could analyze it, it would be REALLY interesting to see if the slightly higher amount of fuel you used in the 7,000km running the 5W-40 is LESS than the $8-9 cost of the litre of 5W-20 you would have had to add.
On the M1 5w40 TDT in the Expedition and ZERO (discernible) consumption. Still a little above full on the dipstick.
With the 5w20, I was already down a litre at this point.
I can't wait to try my TDT... But I still have 11K KM to go on this Amsoil.
Stupid Amsoil long OCI's.
I've only got 5K to go left on this, which will be done within the month most likely.
Since they recently changed my region of restaurants at work my average monthly mileage has been cut from 5K/Mo to about 3.7K/Mo so it will take me a couple months before I can switch to TDT unless I dump it early...
Yeah, the stuff in our stores is CI-4/SL as well. $41.77/5 litres isn't bad at all for such a robust oil!
You stock up, or just buy as you need? Because you know, if you aren't stashing massive amounts of sale oil, you aren't a real BITOG'er! (BTW, I don't have a stash of oil myself. No point with one small car in a condo!)
Stash?!? Did someone say stash?
I like to show off my stash every chance I get
Kidding aside, I've often thought of RTS, TDT, or another quality 5w40 for my Forester. Maybe save all that pretty 5w30 PP for winter and start inserting RTS during summer... hmmm