My daughter has an 05 Civic ex has 20k on it, she took it to a Firestone auto center for an oil change for $16.99 they put a synthetic blend 10w30, I checked the oil recently and was over filled and the oil is very thick, the web site for Firestone shows 10w30 high mileage for the only blend that they offer, I feel its way thick the car calls for 5w-20, if they had put in 5w30 not high mileage I wouldn't feel so bad and probably would've left it alone.
I decided to change it after 2k miles I just considered it a flush, and switched to PP 5w-20 full synthetic at a great price with a Napa Gold filter, I noticed a huge difference between the Firestone filter and the Napa Gold which is similar to the OEM filter as far as size.
Who makes the Firestone filter? its huge should i have kept it? it looked really good it even uses a roun o ring like some K&N filters.
I'm kinda picky because of the warranty, don't want to void it using the wrong oil.

I decided to change it after 2k miles I just considered it a flush, and switched to PP 5w-20 full synthetic at a great price with a Napa Gold filter, I noticed a huge difference between the Firestone filter and the Napa Gold which is similar to the OEM filter as far as size.

Who makes the Firestone filter? its huge should i have kept it? it looked really good it even uses a roun o ring like some K&N filters.

I'm kinda picky because of the warranty, don't want to void it using the wrong oil.