Since my parents own two saturn SL 1&2, and I a 1986 Chrysler New Yorker Turbo, would Pro-Tec filters be a good buy? Rockauto had them on sale for $1.28 but had to get a case of 12. No problem since we all together own 3 that use that filter. Any objections? Pro-Tec is made by wix. That should be a plus.