NapaGold HD Oil Filter vs Fram HD Oil Filter Comparison

POINTS:

• The Fram HD filter uses a leaf spring rather than a coil spring; the leaf spring must always seat properly onto the end cap. Additionally, a leaf spring can bend under high pressures.
• The filter media inside the Fram HD was metal crimped to itself, rather than glued.
• Fram filters use a paper media, not synthetic.
• Fram does not use a phenolic resin which helps to bind the media and protect during high temperatures.
• The gasket between the element and the base is made of an epoxy.
• The Fram HD uses a nipple on the top end cap to seal against the base.