Crazy cheap engine oil in Asda.

[clarkey1984]

For anyone who might be interested, 5w30 fully synthetic oil is on sale in Asda for £3, 5l cans, I bought all 4 they had, that'll see me through about 3 years of oil changes I reckon, hell of a deal I thought, I know it says for VW engines but the specs seem ok so I can't see that it makes a lot of difference.

[magnuz]

Are we trying to wake the resident oil guru, who's not been here for a while ?

[CharlesStevenson]

As magnuz commented, there are some people on here who are VERY knowledgeable on what is the correct oil to use, however, I'm sure what you've purchased will do good service in what is not the newest of engines (nothing bad about your car meant) just that all x40's are a few years past their prime by now.

[canis]

Bah, y'all take this too seriously. Given the perspective of "any oil is better than none", it's probably fine. What i mean is; Maybe there are differences, but they're too small to really be bothering with in the grand scheme of things.

Engines will wear no matter what oil you put in them. You could add ground unicorn horn mixture to the oil - it'll still wear eventually. It's a machine. When they break, you replace the parts.

I have no faith in these magic potions at all. All the silly detergents and this-n-that. I would hazard that 90% of it is all marketing bullshut.

Consider toothpaste. You got an entire aisle of toothpaste in ASDA, each promissing a plethora of different effects. But in reality - brushing your teeth with anything will help prevent decay, but they'll decay anyway in the end.

I ran my 1600 on 10/40W semi-synthetic for absolutely years, no ill effects whatsoever.

[CJL]

Have the got fill dates on them?

Might be old stock they are selling at a loss.

[clarkey1984]

I'm the same, oil is oil, provided it's the right grade or at least close, moreso on an engine that's approaching 190k, for that price you can't go wrong, and not old stock either as the manufacture date is 13/06/19, which is odd as to why it was so cheap, good enough for me though.

[XC90Mk1]

Originally Posted by CJL

Have the got fill dates on them?

Might be old stock they are selling at a loss.

I purchased Castrol 0w30 from tesco in 2016. The oil was 4 pounds per 2.5l and I got enough to change every 6k from 40,000 to 100,000 miles (bottles and bottles).

I wrote to castrol to ask about sell by dates and was informed that stored in a cool dry area and upopened there is no expiry date but to agitate the container to mix before using.

[Clan]

Originally Posted by magnuz

Are we trying to wake the resident oil guru, who's not been here for a while ?

[cheshired5]

Originally Posted by clarkey1984

While I see your logic, it is a little flawed, 5w30 fully synthetic and the specs it meets (which seem ok) is going to be at least as good as say 10w40 semi from someone like Castrol isn't it.

The oil you've bought is C3 spec though and I very much doubt that your engine requires C3.
What is the required oil spec in the owner's manual?

[clarkey1984]

Originally Posted by cheshired5

The oil you've bought is C3 spec though and I very much doubt that your engine requires C3.
What is the required oil spec in the owner's manual?

Car doesn't have a manual but online info states A3/B3/B4 SAE 5W-40, and C3 appears to be an equivalent so far as I can make out so all good.