[dw1]

Looks good - nice design.

BUT.... I suggest you also consider a different version - one that is more compatible with 5 qt oil containers.

Here's why:
Despite having done more than a few oil changes on my '87 3.2, for the first time last week I used a 5 qt. container (Valvoline VR1 20w-50 racing oil because of its high ZDDP) and I ran into a problem because one cannot pour slowly enough to prevent overflowing any of my conventional funnels. Quite a mess, luckily most of it ended up in the paper towels and newspaper I put under the oil fill opening.

I even tried dispensing the 5 qt container into 1 qt containers with the predictable very messy results.

I ended up using a funnel with a flexible "gooseneck" and while that worked, carefully pouring from a large oil container while simultaneously holding the funnel and avoiding making a mess got me thinking there had to be an easier way.....