As long as the engine is well cared for (oil and filter changes, spark plugs as needed) it should be A-OK. BUT... let the oil changes be ignored... and the return passages gradually become clogged and restrictive... welcoming progressive oil starvation and proper flow throughout the engine. This "family" of engines shares this potential problem more-so than certain other engines.

Mopar Mitch "Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers! Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!