Seen it first hand, synthetic slips through and leaks more than conventional. And theres data to back that up.

And you all saw my input on brands.

After watching these a while ago I decided to do some research, and then I watched them again. Cant really explain it any better than this:

 

Like I wrote before, if synthetic oil was "thinner" than its SAE grade, then it would have a lower SAE grade specification. This isn't open for discussion.

The only (possibly) credible explanation I've ever heard for some older engines beginning to leak after being introduced to synthetic oil for the first time is that the gaskets have previously been compromised, however, the accumulated crud and varnish deposits which are typically left behind by conventional oil act as a barrier to leaking. Given the different (and more pure) carbon chains which make up the base of synthetic oil, plus the (typical) higher amount of "detergents" in the additive packages, the aforementioned crud and deposits are washed away and oil starts to leak.

The above stated, I've converted dozens of high-mileage engines to synthetic oil over the years and, so far at least, not one has started leaking.

 

My explanation used the term 'thinner' for a lack of better words. 5w-30 is 5w-30 whether or not its conventional. I know that.

But enlighten me with an argument valid enough to combat what I've found, what ive seen for myself (and whats posted, take a look at the links if youd be so gracious). Why does synthetic seem to slip through the seals much more easily than conventional?

 

What you've found? Seriously? Anecdotal information means nothing. I'm done here.

 

Haha, I enjoy your attitude sometimes. In person I'm sure this conversation would be much more civilized. Unless you get this hyped up in person...

But I'm asking you to provide me with some data and solid information. Not to validate my own argument, I'm sincerely looking to learn something here.

 

Gentlemen: This is a debate. Lets just leave it at that, please....please.

 

Thank all of u for your info and opinions it was very helpful ive decided to stay with the regular oil and in the future when i have to swap engines maybe this question will be asked again but im sure thats years from now this car runs great . Again thx everyone

 

Either way, you should be fine. My reasons for synthetic over the years have been longer change intervals ( I don't enjoy crawling under there so often) and slightly better fuel economy. But hey, you got a Honda, that has been apparently well cared for, so no worries. It should go a long time more. I have never heard of a stock Honda engine breaking internally that was properly maintained - at any mileage. Maybe there are a few, but pretty rare. Best of luck with the new ( old ) Honda.

 

You can drive a honda for miles bone dry on oil and it still wont break :P

I gotta look into the viscosity more since this is not going anywhere...

So anyone go to the 10k mile point with synthetic oil changes?

 

There are entire websites/forums that are nothing but "oil" related sites.

Again, lets not start another debate.....because "how often to change engine oil" is just as bad.