Engine Oil: what's best?

[KWAWD]

Flip, this issue about Magnatec that MadMagna raised and TiMi commented on is terrifying. Thanks Waynevb14 for posting opposite experience which helps to reduce that! Anyone else have experience with long term use of Magnatec?

Regardless, I will switch to the Penrite. I didn't pay attention about oil brand/product on the KH before. I've had the KH since new, so 12 years now (wow) and it's got nearly 200ks on it. No smoke, runs beautifully, but it's probably had a mix of brands over the years. One thing though, I have diligently changed the oil at least every 10ks, sometimes more often. Maybe it never had MagnaTec in it, possibly.

Is there a procedure to completely replace the old engine oil? Or is a drain and fill sufficient to get all the old oil out?

[Dave]

Is there a procedure to completely replace the old engine oil? Or is a drain and fill sufficient to get all the old oil out?

if you change oil regualrly, there is little reason
To flush. In fact on an old engine it is recommended to not flush it as you can loosen deposits in the oil galleries and cause damage. If you do want to do a flush, run a cheapish oil through the motor for a few hundred Ks then drop it and refill with good stuff. New filters as well obviously