2007 Honda Civic EX 1.8L 5spd Auto. Sump holds 3.9 quarts. Amsoil EA oil filter used. NAPA GOLD / WIX air filter left untouched for the past 2 OCIs. (changed it with the new fill since Silicon is creeping up) I told Blackstone that i'll be using the "Signature Series" oil with the next fill, hence their 11k recommendation based on that and the previous UOA reports on SSO. However, I ended up putting in OE 0w20 at the last minute for the winter run instead of AZO 0w30 as planned because i figured that the 20 weight would be a better choice. Aprox 1/4 quart was added about mid way through the interval (as i always do) to top things off and bring the oil level up to full for the remainder of the OCI. Looks like Amsoil's 10,000 mile recommendation with the XL line is pretty dead on, as TBN would be touching 1.0 had i ran this another 1,000 miles. TAN looks a little high (starts out in the 3.6ish i assume) but i'm not too worried about it. The block is Super Shiny, while looking through the filler hole. Thoughts, Comments?