Oil types (1 Viewer)

Oct 29, 2008
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According to the manual for my 2.8jtd Ducato I can use either 10w40. or 5w40 in our climate.

The usual oil used is generally 10w40 semi synthetic but In my opinion we would be better with 5w40 fully synthetic if we are using for van all year long in the UK as it gives better protection when cold and at least equal protection when hot. Our vans don't do a lot of stop starting like a delivery van and do more cold starts.

So do we have any oil specialists on here who know more than me?

Any opinions?
 

Snowbird

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Apr 24, 2009
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Am a big believer in changing oil more frequently than the recommendations. I use 15/40 in my VW car and change at 6000 miles. Its now done over 160000 trouble free miles. The MH which is Merc based is changed at 5000 miles and that's now done 167000kms. When away on long trips I carry a spare filter and oil and get local garage to do it when due.
 
Jan 27, 2009
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According to the manual for my 2.8jtd Ducato I can use either 10w40. or 5w40 in our climate.

The usual oil used is generally 10w40 semi synthetic but In my opinion we would be better with 5w40 fully synthetic if we are using for van all year long in the UK as it gives better protection when cold and at least equal protection when hot. Our vans don't do a lot of stop starting like a delivery van and do more cold starts.

So do we have any oil specialists on here who know more than me?

Any opinions?

My 'expert' told me I am wasting my money time replacing semi-synthetic with fully synthetic. (which I haven't)
He says there is no mechanical advantage in what you are suggesting?

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OP
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jezport
Oct 29, 2008
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My 'expert' told me I am wasting my money time replacing semi-synthetic with fully synthetic. (which I haven't)
He says there is no mechanical advantage in what you are suggesting?

The price difference isn't massive between the 2 oils. I was thinking the 5w40 would cut down on wear when cold.
 

sdc77

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Jan 28, 2013
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On some older engines the oil spec may not be ultra important .. but certainly on newer engines the correct grade of oil should be used if only to keep your warranty valid..
Regular oil changes would be more beneficial id have thought

I have always found opie oils to be a pretty competitive company for oil.
 
Last edited:
Dec 6, 2011
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On some older engines the oil spec may not be ultra important .. but certainly on newer engines the correct grade of oil should be used if only to keep your warranty valid..
Regular oil changes would be more beneficial id have thought

I have always found opie oils to be a pretty competitive company for oil.

this is very true the newer engines particularly Euro 5 need specific oils which will keep the particulate filter "happy". older engines are less fussy. but i am also informed by local garage that on pre euro 4 engines the step up in price to fully synthetic is not justified.

but its your van and your money:thumb:

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jezport
Oct 29, 2008
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The main thing aire was thinking about was the viscousity I was looking at 5w40 vs 10w40. Which is best to protect the engine when hot and cold. Surely the 5w40 is best in the UK.
 

pappajohn

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while the grade of oil is important, the actual spec is moreso.

manufacturers stipulate a particular oil formula.

my Chrysler MUST use 5w30 grade low ash oil and the spec MUST be MB229.51 and ACEA C3....ave price = £45 per 4.5ltrs...and i need 6.5ltrs :Sad:

any other specification WILL cause irreparable damage in a short time.

my RV engine requires 5w30 as well but must be the Ford spec WWS_M2C153_G...cant use the Chrysler oil in it

gone are the days when you chucked in any old 20w50 grade oil

Worth checking your chassis handbook or googling the correct spec oil.
 

Geo

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Jul 29, 2007
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10 - 40 is your recommended (Proper) spec
5 - 40 is an alternative
normally used if temps are around -15 below moderate uk climates
as well as the starting element please consider the the viscosity is chosen for its suspension (dirt holding) properties whereby thicker is better
Oil is always a trade off:Doh:
Only you can decide if your choices are better than Fiats:Doh:

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Last edited:

jhorsf

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May 15, 2009
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Important oil info

I remember reading a thread on another forum and euroserve nic said his vans of that age leaked when fiat recommended changing to thinner oil and not to use it


here you go

In the face of overwhelming evidence I have to advise you of a serious risk of oil leaks on Fiat Ducato (or Peugeot/Citroen vehicles) fitted with 2.8JTD or 2.8HDi engines.

In 2005 the manufacturer changed the recommended oil from 10W40 to 5W40 and as such we have been filling our vehicles with the latter oil if they were registered in 2005 or later.

Prior to this we had used 15W40 and 10W40 with no oil leaks at all EVER from the front crank seal on any vans registered 2004 or previous.

Without exception ALL of the vans in which the 5W40 oil was used have developed leaks from this seal. I am talking about in excess of 20 vans of ours and another 20 or so customer owned vehicles and stress again that ALL have been affected.

The problem has not affected any of the 2.3 engines or any of the later X250 vehicles. I cannot comment on 2.0JTD because we see very few of them.

I would strongly recommend that anyone using 5W40 should at the next service change to 10W40 to help to avoid this problem which could result in an unscheduled cam belt change as this has to be removed to change the seal. It may be too late to prevent this happening and for this reason I would recommend that anyone having a cam belt change soon should ask for a new seal to be fitted and have an oil change at the same time. The seal is about £20 and I recommend using the genuine Fiat/Iveco part number 504086314 (It's cheaper from Iveco).

I have always been wary of any manufacturer changing the spec of oil without any engineering upgrades and this is a classic example of jumping on the bandwagon without any consideration of the consequences.

I am sorry to be the bearer of bad news, I hope that this advice will spare some of you from a considerable bill. Even though you travel far less miles than my vans do; a 100% failure rate suggests that many of you will be affected eventually.

Nick
Look on the bright side... 10W40 is cheaper.
 
OP
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jezport
Oct 29, 2008
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10 - 40 is your recommended (Proper) spec
5 - 40 is an alternative
normally used if temps are around -15 below moderate uk climates
as well as the starting element please consider the the viscosity is chosen for its suspension (dirt holding) properties whereby thicker is better
Oil is always a trade off:Doh:
Only you can decide if your choices are better than Fiats:Doh:

I did notice some time back that some oils have higher ash content especially some Castrol products so I avoid them.

Is there any info available on the dirt holding property of oils.
 

Snowbird

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If you are that worried about dirt holding in the oil, fit a spinner. I used to have one fitted on a Cummins engined truck and the oil was as clean when changed as it was when it was put in. We all know how dirty diesel engines are as when you change the oil and start up its immediately black again.

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