oil change!

DomWoo · Post by **DomWoo** » Sun Feb 12, 2006 9:00 pm

alot of the new synthetic oils say you can go for 15k miles with out a change.. like mobil 1 advanced and Ams oil

i have never drivin past 3,500 miles for any of my oils changes and i always use mobil 1 or Ams oil

daewoomofo · Post by **daewoomofo** » Sun Feb 12, 2006 9:04 pm

i usually go about 6000 miles on my mobile 1 synthetic, i want to give royal purple a try soon

BosnianLanos · Post by **BosnianLanos** » Sun Feb 12, 2006 11:18 pm

I truly doubt that changing your oil every 3,000 could in any way hurt your street engine. Going past that mark then gets into the danger zone

genie47 · Post by **genie47** » Mon Feb 13, 2006 3:00 am

rr__kroz123 wrote:Don't take it personally, but don't be a smart ass either

My driving style is the same as yours and I always change my oil every 5000km or every 3 months whichs comes first that's what the dealer here recommends and it is also hot as hell here.

Changing to late will cause engine slugde and may cause the engine to run harder, burn more gas even if you don't drive hard, and cause your engine to slow down.

So if you don't want to change it every 5000kms that's your problem and if your engine braeks down you'll come eventually here to ask some ?s

What do you drive?
Is Dino oil syntetich or just regular oil

Lubricant related failures are very very rare. Save for the VW longitudinally mounted 1.8T and many of the GM V6 and V8s. That has to do with the engine design. GM Family series engines which the Daewoos are based on are pretty good. 10k km is pretty OK. Wear numbers are good. Check out the following report from someone driving a 1.6L DOHC Aveo (Family 1 engine A16DMS). He is crazy enough to let it go for 15k MILES! The wear numbers look OK but pity there is no TBN report. I believe the oil is truly shot at that mileage.

http://theoildrop.server101.com/ubb/ult ... 3;t=003188

You do need to register to see the report though. Everything was in the normal range save for the nasty amount of silicon dirt. The oil he used was Schaeffer's Supreme 7000 which is a blend.

There are some A16DMS engine UOAs there from Aveos which are no different from the Lanos equipped with A16DMS engines. One (Frost) uses M1 5W30 for 5k miles. He is recommended to go 7k miles with it.

In conclusion, there is no benefit at all doing 3k mile change intervals unless you got more money than common sense.

genie47 · Post by **genie47** » Mon Feb 13, 2006 3:08 am

daewoomofo wrote:i usually go about 6000 miles on my mobile 1 synthetic, i want to give royal purple a try soon

Watch out if you are using Royal Purple. Lots of users complain after analyzing it that the oil is completely shot by 6k miles. Any longer it will be sludge. M1 is pretty good up to 7k miles.

genie47 · Post by **genie47** » Mon Feb 13, 2006 3:11 am

BosnianLanos wrote:I truly doubt that changing your oil every 3,000 could in any way hurt your street engine. Going past that mark then gets into the danger zone

It won't unless the oil is API rated SG.

SL rated oils are pretty good. The verdict is still out for SM rated oil. Many users reported more wear on SM rated oil. This is the result of the reduced ash content which many antiwear additives like ZDP are based upon. Its this obsessive desire by the car manufacturers to save the cat.

daewoomofo · Post by **daewoomofo** » Mon Feb 13, 2006 3:11 am

wo i hae hard pretty good thing about royal pruple, i guess ill have to keep an eye on it and see, when i try it out.

genie47 · Post by **genie47** » Mon Feb 13, 2006 3:20 am

WooHoo wrote:alot of the new synthetic oils say you can go for 15k miles with out a change.. like mobil 1 advanced and Ams oil

i have never drivin past 3,500 miles for any of my oils changes and i always use mobil 1 or Ams oil

Well there is this oil study online. These guys got together and pit M1 against Amsoil.

Read the report here:

http://neptune.spacebears.com/cars/stor ... -life.html

The M1 test results: http://neptune.spacebears.com/cars/stories/mobil1.html

The Amsoil test results: http://neptune.spacebears.com/cars/stories/amsoil.html

However the test car is a Camaro Z28 with a 5.7L V8. A point to note is that these engines are actually very easy on oil. DOHC engines are known to chew up oil for breakfast.

Your mileage may vary but these results to give an indicator on how synthetic oil performs. If the results look pretty hard to decipher, this is my summary:

M1 got higher wear metals and insolubles. Amsoil thickened a bit towards the end. M1 saw more highway miles, Amsoil saw more intermittent use. M1 went 12k miles w/o filter change. Amsoil did not have a filter change.

The conclusion: M1 and Amsoil are pretty much equals.

genie47 · Post by **genie47** » Mon Feb 13, 2006 3:28 am

WooHoo wrote:i read in a magazine that some of the new 2006 chevys call for a oil change every 30k miles.. dont know how true that is but it was when i was working at a lube shop

Not going to happen. However the trend is towards thinner oils. Toyota, Ford and Honda now recommend 20wt oils for reasons of fuel economy to meet the CAFE but there are other engineering reasons why and longer drain intervals are increasingly favored. However, 30k miles is a ludricous! Unless Chevies start using Mercedes-Benze 229.5 rated oil with their proprietary fleece filters with the "oil life monitor".

genie47 · Post by **genie47** » Mon Feb 13, 2006 3:30 am

cpd wrote:I change whenever I get around to it; between 5000 and 10000kms. I'm lazy.

At least you still remember to change.

I know of this elderly lady driving a Hyundai Accent. She just drives and drives the car until the oil pressure warning light comes up. She then tops up the oil but makes no effort to change the oil or the filter.

The car is still running.

DomWoo · Post by **DomWoo** » Mon Feb 13, 2006 5:04 am

genie47 wrote:
cpd wrote:I change whenever I get around to it; between 5000 and 10000kms. I'm lazy.
At least you still remember to change.

I know of this elderly lady driving a Hyundai Accent. She just drives and drives the car until the oil pressure warning light comes up. She then tops up the oil but makes no effort to change the oil or the filter.

The car is still running.

when i was working at the lube shop... the regular oil change was about 10k miles.. when i pulled the plug the oil was black as hell but still liquid. very few people ran synthetic. and all there cars seem to run good

one car that came in had 50k miles on a single oils change (toyota pickup) when i pulled the plug nothing came out.. i took a screw driver and poked up in the plug hole and oil slowly started coming out. the oil had almost completely turned to sludge but the truck still ran good

MMamdouh · Post by **MMamdouh** » Mon Feb 13, 2006 9:47 am

WooHoo wrote: the oil had almost completely turned to sludge but the truck still ran good

the question is for how long will it be running good? ok you drained the oold oil or whatever it was in the pan but the inner passages of the engine are loaded with the very same sludge so the lubricating cycle of the engine will not be at its optimum.

maybe the car will run fine for long time afterwards but at one point of time where their is too much load on the engine and heat arround the engine will fail... the damage is not momentarly, its rather a build up process.

its kinda like people that run into a head gasket problem when they blow their thermostate housing... the damage to the gasket is not evedent at the moment but it has occured and might take over a year to show up.

i still see that the sooner the better as far as oil changes are concerned.

MMamdouh

genie47 · Post by **genie47** » Mon Feb 13, 2006 10:03 am

This is an article for you all who think API SL/GF3 and SM/GF4 oils don't cut it.

http://www.ilma.org/resources/impact_lowqualityoils.pdf

It compares SL and SM against SA. Trust me, today's SL and SM rated oils are marathon runners compared to the anemic SA or SG oil of the past. 168hrs is the torture test.

DomWoo · Post by **DomWoo** » Mon Feb 13, 2006 7:06 pm

MMamdouh wrote:
WooHoo wrote: the oil had almost completely turned to sludge but the truck still ran good
the question is for how long will it be running good? ok you drained the oold oil or whatever it was in the pan but the inner passages of the engine are loaded with the very same sludge so the lubricating cycle of the engine will not be at its optimum.

maybe the car will run fine for long time afterwards but at one point of time where their is too much load on the engine and heat arround the engine will fail... the damage is not momentarly, its rather a build up process.

its kinda like people that run into a head gasket problem when they blow their thermostate housing... the damage to the gasket is not evedent at the moment but it has occured and might take over a year to show up.

i still see that the sooner the better as far as oil changes are concerned.

MMamdouh

yeah its no doubt that damnage is done.. its just i cant believe people are so damn stupid to not change the oil for 10k or even 50k miles.. i was talking to a guy who had a little 3banger geo metro and he never changed the oil.. just added to it when it burned off but never changed it. he had it for years and put 130k miles on it and one day it was stolen so who knows how long the car would have gone..

there was also a truck made (cant remember the name) you never had to change the oil. it was equip with a on board oil refinery. i couldnt beleive it when i was told about it but its true the guy went home and got info about it just so he prove to me..

wouldnt that be nice.. never having to change oil

bluecube · Post by **bluecube** » Mon Feb 13, 2006 8:57 pm

I agree with the 5000km (or 3000miles) oil change interval. It doesnt cost much and is well worth it. I change my oil religiously before 5000km every time. And I always use proper synthetic oils. It is true that some new cars have much longer oil change intervals but they are much newer and more advanced engines than the ones used in our Daewoos (not to mention these new cars are exactly that - new and not worn like ours).