Originally Posted By: ChadW
Why do we put oil in our engines? To PROTECT it. Right? To prolong the life of the engine. ????? You don't have to be a scientist to know that. It looks like a-lot of people here are pretty vague. But some at least wing it and try to give a halfway reasonable answer.
your question was extremely vague. therefore you will get vague answers.
also I see you are new here.. might want to read the forum rules this isnt your LOLs typical forum
its fairly but strictly moderated.
at the very least you need to tell us what application you are talking about.
if its a 2001-2009 ford ranger 4.0 the answer would be no..
if its a 2011 toyota corolla... the answer would be probably.
it would also depend on particular brands and types of 5w20 and 5w30
some 5w20 might protect better than 5w30 in an application etc. Your question was about as vague as
"what are the best tires" not enough information leads to vague and unsatisfying answers.
and I hope you arent trolling because I wasted 3min typing this