After the first oil change...

[SilverGlow]

Originally Posted by Chupacabra

Changing the oil is the single most important thing that one can do to maintain and extend the life of their vehicle. On a new car....I recommend changing the oil at between 500-1000 miles. After that....I would change the oil every 3K miles or 5mo., whichever comes first regardless of synthetic oil or dino. This is my own style and I don't agree or disagree necessarily with any other regimen BUT do practice my own interval outlined above.

Would you please cite your scientific information on this strategy?

Or is it just how you "feel"?

If you go the scientific route and get UOA's on your oil, you will find that your strategy makes no sense, and has no basis in reality; none whatsoever.

[daf62757]

Originally Posted by Tamago

if you knew the number of engines that toyota has replaced for free off the books (due to engine sludge) to keep their reliability numbers so high, you'd be sad.. i worked for a dealer for 3 months.. in that span i saw 2 V6's and at least 5 4cyls come in with blown engines.. all oil related.

i'm not knocking toyota, but why wait to take out that break-in oil? just because toyota doesn't tell you to do it does not mean you shouldn't... if i followed toyotas recommended 5000mile oil change on my car i'd likely destroy my engine..

Very good advice. I am about to change out my oil and I am at around 1000. You are right on target with your advice!

[06silveryaris]

Originally Posted by Chupacabra

Changing the oil is the single most important thing that one can do to maintain and extend the life of their vehicle. On a new car....I recommend changing the oil at between 500-1000 miles. After that....I would change the oil every 3K miles or 5mo., whichever comes first regardless of synthetic oil or dino. This is my own style and I don't agree or disagree necessarily with any other regimen BUT do practice my own interval outlined above.

+1

[marcus]

i always thought that synthetic increase ur change period due to breakdown of the oil is a lot longer..if one will change the oil every specified change date is there a point to go to synthetic.

[kou]

Originally Posted by marcus

i always thought that synthetic increase ur change period due to breakdown of the oil is a lot longer..if one will change the oil every specified change date is there a point to go to synthetic.

if you drive like a granny it probaly will last a little longer, but we only have 3.3 quarts it can't last being abused.
your motor will last forever if you change your oil with regular oil every 2500 and you filter every 5000 miles this will be cheaper than one synth change.

the synth oil is good if you like to rev it out with its stabilty at higher temps. change every 3500-5000 with a new filter, sooner if you rev it out.

[Tamago]

and they both get dirty at the same rate

[kou]

Originally Posted by Tamago

and they both get dirty at the same rate

if you granny it synth will stay cleaner longer in a stock car.it handles the heat better therfore not getting that cooked look so fast.

[Tamago]

Originally Posted by kou

if you granny it synth will stay cleaner longer in a stock car.it handles the heat better therfore not getting that cooked look so fast.

wtf is granny it?

my poor oil gets cooked immediately.. god bless twin/cooled turbos or it'd be worse

[SilverGlow]

Originally Posted by kou

if you granny it synth will stay cleaner longer in a stock car.it handles the heat better therfore not getting that cooked look so fast.

Wow this thread contains lots of bool sheet.

What makes an oil dirty is fuel explosuin blow-by leaking from the combustion chamber past the rings into the oil. Syn and mineral oil get dirty exactly the same way and from the same causes.

[SeaYa]

Originally Posted by natethegreat38

i don't get why people change the oil so early!!?? I guess it isn't going to hurt anything, but it just seems like a waste of time and resources...

To the OP: 2008 Manual Sedan: I did see a slight increase (39 to 42) after my 5000 change (and the oil looked used obviously, but not sludgy, I agree with you, early oil changes for break in were a good idea in the past, but not now, especially not with Toyota..their cleanliness / 5S-Lean standards are top notch, I work for an OEM paint supplier, and seeing Toyotas Manf. standards are what got me looking at the Yaris). The two fill ups before the 5k change were 39ish, and the two right after were 42ish. I've been able to get 42/46 since then. I just had my 15,000 last week and switched to full synthetic, so I'll let you know how that goes.