clearing, firstly let the car loan stay on your cr! I had the same scenario last July. pif'd a car loan...it was still reporting positively. THEN I had the bright idea to dispute with the CRA's as 'paid', thinking it would help my scores if it was removed.
I couldn't have been more wrong! Scores dropped 32 points. Well, I also applied for a Chevron card but between the 2 the scores dropped.
Just paying off a collection will have no effect on the credit score. I know that is so illogical, but that's the way it works.
Even when the CRA's start reporting as collection - paid, that's still almost as bad as the collection itself.
Since it's paid, you can alway GW. Hopefully they will delete it from your records. That's what you want. They are not required to delete, but it's worth a try. Please know that it may not work.
Hope that helps