I installed an Oil Guard bypass filter this weekend. I've got nothing against Amsoil but I could not see spending $29 for replacment filters (Amsoil web price) when I can buy the Oil Guard replacement elements for $8. Anyway, I had about 1800 miles on the oil (moderately dark) and after only 100 miles (I did not change the oil; I merely added 1 quart) the oil looks as if I've just done an oil change
. I'm planning to go 15,000 miles on the Delo 400 between oil changes. Oil Guard guarantees that you can safely double the manufacturer's recommended interval with their filters.
I'm going to make up an Adobe file with pictures for my brother. If anyone is interested, e-mail me and I'll send it to you.


I'm going to make up an Adobe file with pictures for my brother. If anyone is interested, e-mail me and I'll send it to you.