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[3.2 CHARLIE]

Hello , What' the best oil to use in a 3.2 Omega ? Thanks 8-)

[markspark]

In my view you can't beat gen Vx oil 

[feeutfo]

Get yourself a trade club card by joining abs, link below, and enjoy trade club prices on things like oil, £35odd for 20liters of 10w 40 semi synth. Plugs are a couple of quid each.

Not all tc prices are cheapest, but def worth £20 for the card.

Hth

[Kevin Wood]

The specified oil is the GM Fully Synthetic 5w30. About £50-£60 for 20 litres on trade club.

If you are going to ignore the daft 20k service interval and change the oil at least every 5-6k miles (which is the recommendation here) the 10w40 will be fine at £30 odd for 20 litres.

If the oil is going to be in there longer I would stick with the 5w30.

Kevin

[TheBoy]

The specified oil is the GM Fully Synthetic 5w30. About £50-£60 for 20 litres on trade club.

If you are going to ignore the daft 20k service interval and change the oil at least every 5-6k miles (which is the recommendation here) the 10w40 will be fine at £30 odd for 20 litres.

If the oil is going to be in there longer I would stick with the 5w30.

Kevin

- I think I'll stick to my 3k

I my new 3.2, thats gonna need a load of 1k changes....

[Kevin Wood]

- I think I'll stick to my 3k

I my new 3.2, thats gonna need a load of 1k changes....

I did say "at least".

Kevin

[GaryBC]

It's funny as I was going to ask a similar question!

The car handbook (W reg, 2.5 CD auto) specifies a whole range of oils depending which latitude you live at - but for the UK climate it says (if I remember right) either 10w-40 or 5w-30. What it doesn't do is tell you how to choose between the two grades!

So, what would make me select one over the other and why?

Cheers,
Gaz

[Kevin Wood]

So, what would make me select one over the other and why?

The grade isn't all that important, IMHO. The engine is specified to run on either. If it's got a lot of miles under its' belt it might be better to go for the 40 grade oil to minimise oil consumption.

The big difference between the two oils is the life. If you're going to change it every 3k the 5w30 is a waste of money. If you're going to leave it longer it's a good investment.

Kevin

[GaryBC]

Aha! So, in a nutshell, the thinner oil lasts longer but the thicker one is better in the older engines.

[Kevin Wood]

Aha! So, in a nutshell, the thinner oil lasts longer but the thicker one is better in the older engines.

Yes, in a nutshell. Plus the fact that if it burns oil you don't want to be constantly topping it up with the expensive stuff.

The 5w30 was designed for the 20k service interval, because an oil was required that is still giving some level of protection at that mileage.

Let's say you can double the mileage between changes, but the oil costs double anyway. :-/ If you can do DIY changes for the cost of an oil filter there's little point.

Having used both (the Westfield needs a decent 5w30 so that's what I tend to buy) if I change the oil after 5 or 6 K and it was the 10w40 previously, I notice the difference from the driver's seat, and the oil that comes out is thin, black and smells horrible. If it was 5w30 I don't notice the difference and the oil comes out as it went in, just with a little more colour.

Very subjective and I can't tell what's actually happening inside the engine, but just my thoughts.

Kevin

[Brucie1946]

I use silkolene pro s 10w50 fully synthetic, as recommended by oilman, quietens engine and is used by the likes of lancer evo club etc.  Paid about 30 odd for 5 litres and had spare from before to make up the 6 litre capacity.

Vaux oil good n cheap on tc, but you can get better!

[cem_devecioglu]

best one I used so far was 0-40 Mobil 1..

miggies engine was so silent that I could only understand from the rpm needle

ok .. where is my comission

[TheBoy]

I use silkolene pro s 10w50 fully synthetic, as recommended by oilman, quietens engine and is used by the likes of lancer evo club etc.  Paid about 30 odd for 5 litres and had spare from before to make up the 6 litre capacity.

Vaux oil good n cheap on tc, but you can get better!

Indeed you can, but I'd wager 3 lots of cheaper TC (but still quality) oil every 3k is better than a far more expensive oil every 10k ?  :-/

[Kevin Wood]

I use silkolene pro s 10w50 fully synthetic, as recommended by oilman, quietens engine and is used by the likes of lancer evo club etc.  Paid about 30 odd for 5 litres and had spare from before to make up the 6 litre capacity.

Vaux oil good n cheap on tc, but you can get better!

Indeed you can, but I'd wager 3 lots of cheaper TC (but still quality) oil every 3k is better than a far more expensive oil every 10k ?  :-/

Yep, and 10w50 is more viscous than specified for the GM V6. It would be a great oil for track use where it's running hotter than designed but not as an every day driving oil, especially in an engine with an oil cooler where the oil won't run very hot under any circumstances in normal road driving. IMHO at any rate .

For a road car it's hard to beat the GM stuff for cost effectiveness. Doesn't mean you can't pay more but can you quantify what you're gaining by doing so other than by word of mouth or marketing propaganda? How many Omegas die due to oil-related engine wear as opposed to tin worm, cam belt failure, accidents, etc?

Anyway.. This is an oil thread. Remember them?

Kevin

[Lazydocker]

I use silkolene pro s 10w50 fully synthetic, as recommended by oilman, quietens engine and is used by the likes of lancer evo club etc.  Paid about 30 odd for 5 litres and had spare from before to make up the 6 litre capacity.

Vaux oil good n cheap on tc, but you can get better!

Indeed you can, but I'd wager 3 lots of cheaper TC (but still quality) oil every 3k is better than a far more expensive oil every 10k ?  :-/

Yep, and 10w50 is more viscous than specified for the GM V6. It would be a great oil for track use where it's running hotter than designed but not as an every day driving oil, especially in an engine with an oil cooler where the oil won't run very hot under any circumstances in normal road driving. IMHO at any rate .

For a road car it's hard to beat the GM stuff for cost effectiveness. Doesn't mean you can't pay more but can you quantify what you're gaining by doing so other than by word of mouth or marketing propaganda? How many Omegas die due to oil-related engine wear as opposed to tin worm, cam belt failure, accidents, etc?

Anyway.. This is an oil thread. Remember them?

Kevin

I was thinking that... Haven't seen one for quite a while though

[alexandjen]

Hello , What' the best oil to use in a 3.2 Omega ? Thanks 8-)

Charlie, where are you based? Can you update your profile with your location please? 

[robson]

I had a lot of Mayo did breathers and put in Mobil No sign of Mayo now

[Brucie1946]

I'd say take advice from the professionals, like I did, speak to oilman.  You can do no wrong by putting in different oil other than vauxhalls own.  Depends if your car tows, I used fully synthetic and change at 5000.

Everyone has the choice to either eat tesco value beans or heinz, they both do the same!

Better oils have ester and anti friction additives, and are totally labratory engineered, so do a certain job.  Vaux recommend their oil, and most on here use it, which it great.

Oilmans number is 01209 215164.

Hope this helps

Dean

[Stallion]

Iv noticed that with 10w-40 oil i can slightly hear my tappets, which cant be heard from the cabin, but lift the bonnet and its annoying!

But by using 5w-30 oil, its sorted that out, although its dearer but worth it. if anybody has little tappet noise, then try this might help! 

[feeutfo]

Given that the omega engines will go on to do silly miles on the recommended oils, 2 or 300k in some cases, what is to be gained by using a more expensive or better oil? I would argue any thing more expensive is a waist of money. No?

[feeutfo]

Also price is not the be all....

The 20liter fully synthetic stuff we can get on trade club for £57 would cost a BMW owner £180 in a their stealerships. PMSL.