also, where can i buy the filter from.

Any motor factors. Just buy a decent OEM brand like Mann Hummel.

You are worrying unnecessarily about adding 1l of 5w oil.

Plus you have already told the garage about the mistake ( from your other post ).

Here is 5l at a good price for the next oil change

www.ebay.co.uk/itm/SH-0w30-C2-C3-Fully-Synthetic-U...O

If you want a genuine filter you will have to go to a Toyata part dept, but Mann Hummel are just as good.

IIRC both Castrol and Duckhams are now part of BP.

I wouldn't worry about it. 5W30 is still good down to -20C which is colder than it's ever likely to get in the UK.

Castrol is a good, reputable brand and as long as the oil matches the stated Toyota specs, the difference between a 0W and a 5W viscosity will not be noticable.

I don't think viscosity is the issue here, and it doesn't seem to be the focus of the OP's concern.

If viscosity were the issue, the very slightly higher viscosity would perhaps give very slightly better wear protection, but probably there'd be no detectable difference.

In other words, it wouldn't matter. This is confirmed by the OP's statement that either 5w30 or 0w30 can be used..

As I understand it, the issue is the exhaust aftertreatment system compatability.

The OP has added a litre of 5w30 ACEA A5/B5 to a system that specifies ACEA C2

C2 is a low SAPS (sulphated ash, phosphorus and sulphur) designed to avoid damage to exhaust aftertreatment systems like the diesel particulate filter.

www.lubrizol.com/en/Lubricant-and-Fuel-Additives/E...0

ACEA A5/B5 isn't. It potentially has higher SAPS, has a higher base number, and a lower level of aftertreatment system compatability.

lubrizol.com/Lubricant-and-Fuel-Additives/Engine-O...0 (specs seem incomplete)

I don't know if the OP has added enough ACEA A5/B5 to compromise his aftertreatment system, but given the reported fragility and expense of these things, I wouldn't dismiss his concerns out of hand.

OP, I suggest you contact the technical department of an oil company with your concerns, but if you want to post on a forum, I'd suggest this US-based oil obsessives site.

bobistheoilguy.com/forums/ubbthreads.php/forums/52..._(PCMO)

If you ordered the oil from Opies, just phone them and ask them to supply a filter as well. Opie sell good quality filters.

Am at work so cant ring dealers but most of the time it seems they want to change the whole oil-filter themselves and dont give out prices. But will try a few this eve. Thanks

Ask the dealer switchboard for "Parts counter".

bought second hand from toyota dealer. oil was right until i put a litre of wrong one in myself.

I presume the OP bought the car secondhand? We don't know what oil has been used before he acquired it. If the wrong oil has been used extensively before, then it could already be too late.

Here is an example of how poor some dealers are.

When our Kia was coming up to its first service I rang round the 3 local dealers for a price. Two quoted £160 the other £120. £120 looked better than £160 so I asked a few questions and they quickly conceeded that if I wanted them to use the correct 5w 30 C3 DPF friendly fully synthetic oil as specified by Kia it would be another £40, total £160. Asked what oil they used it was standard 5w 30 semi synth Ford A1/B1 oil, basically what they used in all the Fords they serviced, they were a Ford/Kia dealer.

Wonder how many owners had DPF issues resulting from this garages use of incorrect oil.

I wonder how many had excessive engine wear? A1/B1 is not known for super lubricity and as far as I can remember Ford specify A5/B5.

I don't doubt what you say. Many dealers just use any oil they have regardless of suitability.

For what it's worth, my diesel with DPF is specified to use A3/B4. I've checked directly with Vauxhall and they say it is right to use GM-LL-B-025 but, they also say that Dexos 2 (which is a C3 oil) is backwards compatible with all Vauxhall/Opel engines both petrol and Diesel.

Edited by Wackyracer on 23/02/2017 at 12:40