engine oil question??????

[rocket0000]

guys is it the more thicker oil like 15w40 effects fuel economy or the thinner oil like 10w30??????
i mean which is better for better fuel economy???
car is vx v6 2001 140000 km...
thanks

[soop]

You wont notice much difference mate. maybe 0.05 of a litre over 5000km

[TonyJZX]

thinner is better for economy

for an ecotec slash moo-uick v6 you can use any crap like 15w-40

[edals]

Thinner is Better, But i would not worry about fuel eco worry about protecting your engine start up to shut down. I use 10-30. Found anything higher like 15-40 upawrds you can notice it when its cold. The VR hates 20-50, Loves 10-40

[soop]

notice what exactly?

[rocket0000]

but mate using a 10w30 in a car with 140000km is a tragedy....
10w30 is designed for new motors but now for a vx 2001 pushing more then 9 years mate.

[rocket0000]

that's the problem everyone got an opinion and a lot of workshop will tell you different story, for example: Holden recommend 10w30 engine Armour, some workshops recommend 15w40 some ppl says noway go for 10w40 or 15w50 i mean what the #### is going on. which oil is better????????? the correct recommendation of an oil grade is by how many km car done.

[db_notso]

as a motor ages you use thicker oil
this helps with the .001 of in inch clearance changes in bearings blah blah blah
so less than 100,000in a vt/vx/vy 10w-30
100k - 150k 15w-30
150k up 20w-50
these are what my cars get depending on age
but eventually thicker oil cant fix these clearances issues because there no longer minor issues (knock knock knock low oil preasure)
most vt's use 15-30 its all a prefference on what your using the car for
like if you thrash it then you should be doing a 5000km oil change interval old nannas do up to 15000 or 12 months
is up to you and how long your keeping the car....

[soop]

^^^ pretty much it mate.

[db_notso]

lol soop!~ you seem to be all over this sh** in every thread i go into!~

[soop]

lol, im fuggin bored atm.

[db_notso]

furry m uff

[rocket0000]

OK mate but could u tell me plz why on earth the Holden makers till now recommend 10w30 engine Armour?????? its really crazy man i remembered once a time when i used to serve my car at Holden i always asked them why u still recommend 10w30 engine Armour oil although all the oil companies in Australia they do recommend 10w40 for v6 ecotec engine and its listed on their websites in lubricant guide. and he goes to me mate listen 10w30 engine Armour is designed and tested ONLY for v6 ecotec engine thats why we recommend it.

[db_notso]

a little thicker oil wont hurt an engine but too thin will
so to cover themselves they always recomend the higher thickness oil.... same for all makes

[edals]

Soop, noticed with the VR if i used 20-50, cause its thicker, it seems a bit sluggish when its cold cause the oil is still getting around. but putting 15-40 in it it seems fine. (yes i said 10-40 but its 15-40 engine armour so it seems) thought maybe was just my VR but my brothers VN use to act the same and it was a recon motor. Either way each to there own. i just use 10-30 engine armour in my ecotec. has over 200k now, so long as you replace seals ie rocker/inlet gaskets etc i dont see the prob.

Anyway i thought holden would test these motors for 1000000000kms on the same oil to make sure they continue to operate as expected before putting it in the manual.

[Brett_jjj]

Luckily the oil we use today is multigrade and not monograde like it was years ago.Back then you would have to change the oil for a different number or viscosity each time summer or winter came around.Multigrade oil fixed that problem and gave us a good choice of oils.You only have to look at the numbers 15w-40 or 20w-50 etc.The first number is how thin the oil is at cold startup or its viscosity when cold.The W stands for winter.The lower this first number,the thinner the oil will be at cold startup, the thinner oil can get to the engine bearings etc quicker than think oil can as it flows faster and easier..Its the opposite for the second number.This is how thick the oil will stay at high temperatures.If you run thin oil at high temperatures,the oil will burn away and be used up as it gets too thin,which it then gets past the oil control rings easier and gets burned up in the combustion chambers.It doesnt offer as much protection to the engine bearings at high revs either,because its thinner,it squishes out from under the engine bearings easier when they are under heavy load..My VS V6 ecotec was made to use 20W-50,unless used in snowy areas in temps of around 0 degrees ,then 15W-40 oil is recommended instead.I use penrite 15W-60 which gives me a bit thinner oil at startup,but stays a little bit thicker under high temp,high load conditions.(which is all the time for my engine hehe).I change my oil and filter every 5000 k's.I never rev a cold engine either.Especially the very first time it fires up,before the oil pressure is up properly.Not a good thing to do if you want the engine to last a long time.

[wortus]

I have been using Castrol Magnatec 10W-40 in my cars for years without any problem or noticable oil consumption under all driving conditions. The VN I used it in had just over 300,000km and the VY that I have now has 148,000km.
I doubt there are set distances travelled where you need to go to a higher viscosity oil however it is something you could try if you noticed excessive oil consumption. A friend of mine with an early model VT's V6 has had oil consumption issues from near new, essentially his will go from full to add over a normal oil change interval. I don't know what oil he uses in it though.

[soop]

Soop, noticed with the VR if i used 20-50, cause its thicker, it seems a bit sluggish when its cold cause the oil is still getting around. but putting 15-40 in it it seems fine. (yes i said 10-40 but its 15-40 engine armour so it seems) thought maybe was just my VR but my brothers VN use to act the same and it was a recon motor. Either way each to there own. i just use 10-30 engine armour in my ecotec. has over 200k now, so long as you replace seals ie rocker/inlet gaskets etc i dont see the prob.

Anyway i thought holden would test these motors for 1000000000kms on the same oil to make sure they continue to operate as expected before putting it in the manual.

Eh, sounds feasible. Similar thing happens if you over fill it too.

[edals]

Eh, sounds feasible. Similar thing happens if you over fill it too.

Kinda hard when i measure it exactly lol then check the dip stick several times after lol

[VYMAD]

I'm with the Magnatec 10-40 too. Used it in the VY from 42,000 to the current 130,000. Now it may use about 3 mm on the dipstick between 7,000 k oil changes.

[DLFHUB666]

I have used magnatec in my ls1 since i got it at 60,000km now 116,000km, Would recomend it.

[soop]

I've got magnatec 10-30 (I think could be 10-40), and I find its a little rattly when cold. My dads LS1 has 220k (100k more then mine) and I just filled it with Castrol Edge 15-60 and it runs smooth as a baby's arse, no noise what so ever when cold. I think I'll be going with that next service.

[db_notso]

soop all holden gen1 to 5 v8s rattle on start up its the lifters and its normal only abnormal if rattles longer than 3minutes NO JOKES 3 MINUTES!~

[WogBoyz]

mine doesnt rattle on cold start, totally quite

[db_notso]

yeah well try it ina garage after sitting all weekend and have bonnet open and window down
thats the sort of complaints i have to deal with