I heard that the oil in the EVO should not be changed every 3k miles like a normal car.... But how many miles do you folks suggest..... I've everything from 5K (from a dealer) to 7k from a local shop...

What do you think?

 

I think it's totally based on usage.. I'll change the oil immediately after a track event, regardless of the miles put on the car in between. In the winter when it's cold and I'm just puttering around I'll probably go 3-4K miles between changes.. but in the summer I usually get pretty **** and change it every 2K miles. It barely costs more than a fillup and the arrangement of the filter/drain plug makes it super easy, you don't even have to jack up the car to do both. Much easier than my girlfriend's focus which has the filter in the side of the engine block...

Incidentally, if it is possible to change the oil too often, someone please set me straight.

 

i change mine every 3, you should too, i remember there was issues a while back with people saying the evo ate oil up, and well i just think any car should be changed every 3k.

 

See the guy at the shop told me that it was better for cars with turbos to go a little longer.... He said it is similar to how a replacement CAI performs better when it is a little dirty....

I don't know though so I'm just asking to find out the true...

 

Um, your kidding right?

 

Erioshi.... Nope not kidding.... That is why I'm asking I questioned if this dude new what he was talking about...

 

someone posted a thread about a study that found older oil protected against engine wear better than fresh oil. You should do a search and find that thread. It was pretty interesting.

 

isn't clean oil better than dirty oil..??
common sense...dunno????

 

I go 3k-5k, and I drive the car on the track. IMHO, I think you're "Killing it with kindness" if you change the oil more frequently than that. Oils are so much better--especially synthetics--than they were years ago. Moreover, if the car is "eating" oil you are essentially "refreshing" the oil every time you top-off the level. FWIW, my brother tracks his '87 944 turbo and changes his oil between 3k-5k.

 

I believe the study stated that not priming the filter with oil (Which was apparently common), caused premature engine wear.

Clean oil and a fresh filter can never hurt although excessive oil changes tend to only hurt your wallet.

 

https://www.evolutionm.net/forums/sh...l+change+study

Here's the thread.

 

Interesting stuff....

 

Sorry about the kidding comment - the air filter thing caught me off guard. The other thread has some great info.

The rule of thumb has between 3K and 5K for oil changes. The reason for changing oils isn't just viscosity break down, although that is a problem with conventional oil.

Oil will also pick up combustion by-products like carbon, metals, acids, etc. An oil filter catches many of these particles, but some are too small for the filter. These by-products can also cause wear if left running through your enige for too long.

A *VERY* long time ago when Mobile One was first released to the public, Mobile said you could drive 20K between oil changes - people tried it and their cars began having problems. Further research turned up problems caused by combustion by-products, not viscosity break down, when oil was left in a car too long.

Leaving the same filter in a car for too long can also lead to problems; a filter will flow oil less easily as it gets clogged by the debris it pulls out of your oil. The rule off thumb for high performance or heavy duty applications is change your filter at every oil change. Always pre-fill your filter when changing oil.

 

if its synthetic u can go lke 5 or 7, but i rather go 3. or how hard u drive it. the harder u drive it, the more u burn oil...

 

3-5k sounds right.depends on the driving,and if i'm not lazy.i try to change it closer to 3k