i read one article on diffrent forum and mostly it was all about not using regular oil. it was suggesting to use synthetic oil. how true is it ? it says that conventional oil=slude in the engine at the long time. how true is it ? i change my oil on regular base. does this make sense ? I have 03 civic with 30k miles.

 

Yes, conventional oil can 'sludge'. If you change regularly, it shouldn't be a problem.

 

so you are suggesting that i should change to synthetic oil ?

 

I've done a lot of research into oil over this issue. I'll summarize my findings thusly.

Although synthetic oil is, in many ways, an improvement over conventional oil, the benefits only outweigh the costs in a turbocharged engine. Coking of oil in the turbocharger is one of the top causes of turbo death, and although this can be minimized by idle down periods (or use of a turbo timer), synthetic oil does the job even better. For almost any other application regular changing of conventional oil is all you need for a very healthy engine.

 

I wouldn't be overly concerned about conventional oil turning into "sludge" if you do regular oil changes. I use Mobil1 on my WRX for the reason that RevenantAE described above. For my EG hatch, I use regular oil, although of the high mileage variety. Change your oil out at 3K mile intervals and it shouldn't be a problem.

 

i love mobil 1 , normal oil is cool most of the time though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by return_2020 &raquo;</TD></TR><TR><TD CLASS="quote">so you are suggesting that i should change to synthetic oil ? </TD></TR></TABLE>
Just change your oil on time. and you will be fine

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sohcvtec1995 &raquo;</TD></TR><TR><TD CLASS="quote">
Just change your oil on time. and you will be fine</TD></TR></TABLE>

All of my cars get nothing but the dino juice.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sohcvtec1995 &raquo;</TD></TR><TR><TD CLASS="quote">
Just change your oil on time. and you will be fine</TD></TR></TABLE>

Exactly. The frequency is as important as the juice. If you change regularly, dino oil should be fine.

 

There should be no problem with that low of mileage engine if you don't abuse your oil change's.

 

if you do plan on switching to synthetic do it now, because when your motor gets old the sludge stops leaks and the synthetic will clean out the sludge and sometimes cause leaks. that is just what i read on some site. but no if you change your motor oil regulary it will be fine, don't waste the money.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civiccpedx &raquo;</TD></TR><TR><TD CLASS="quote">if you do plan on switching to synthetic do it now, because when your motor gets old the sludge stops leaks and the synthetic will clean out the sludge and sometimes cause leaks. that is just what i read on some site. </TD></TR></TABLE>

While there may be some truth to that, it's mostly misinformation. Old engines and seals were not designed to work with synthetic. When they switched, there were serious leakage problems. Modern engines don't have a problem going back and forth. Before 5W-30 syn was widely available I switched from full to blend to dino and back, based on what I could find in the stores.

An older engine that hasn't been properly maintained will sludge. Seals can go bad without proper maintenance as well. When someone with 150K on the clock and a crappy motor that hasn't been maintained in the first place decides to switch to syn to make up for years of abuse; it's possible to cause leaks by removing the sludge that was basically sealing the whole thing. But if it does leak, it means the seals were bad in the first place, and would have leaked or failed soon enough anyway.