oil for c-max ?? - Ford C-Max Forum
 
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post #1 of 6 Old 11-22-2011, 09:03 AM Thread Starter
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ford recommend castrol magnatec professional A5 5w-30 ,But i am having difficulty in locating a supplier , any ideas? west midlands area. also i have been offered 5w - 30 , but A1 not A5! what is meaning of A1 A3 A5 etc [img]smileys/smiley5.gif[/img]
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post #2 of 6 Old 11-22-2011, 10:25 AM
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Hello Hobobill.

It would appear from this websitehttp://www.driverstechnology.co.uk/oils.htm
that the A5 oil is the highest quality one, which allows an extended
service interval. There is nothing wrong with the A1 oil, but it will
probably need changing sooner than A3 or A5. My personal belief (as a
Marine engineer of 40 years experience) is that motor manufacturers are
pushing service intervals too far in order to reduce cost of ownership
and make their vehicles appear more competitive. Witness the turbo
related problems with the 1.6 TDCi for instance.

It is quite common practice in the marine industry to perform an oil
change on a generator engine (oil only) at 500 hours, followed by oil
and all filters with other service items at 1000 hours.I usually do my
own servicing as soon as the vehicle is out of warranty, and I normally
do oil & filters coming up to MOT time combined with the other
checks, brakes etc, then a quick oil only change at 6 months.

Modern oils contain many additives which combat the build up of
corrosive deposits from the combustion process, and their semi or fully
synthetic formulation makes the body of the oil less susceptible to
degradation. Depending on your type of usage these additives will become
depleted over time, Generally speaking, stop/start urban driving is
harder on oils than long distance motorway usage due to increased "blow
by" caused by alternating engine loading. In fact, a high mileage
motorway driver may indeed be able to extend the service interval, while
the driver of a mainly urban based vehicle may not. This is not helped
by the fact that modern engines do not use a lot of oil, leading to the
oil not being freshened up by the addition of half a litre or so from
time to time.

Hope this helps. Regards

Colin


2008 2.0 TDCi Zetec
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post #3 of 6 Old 11-22-2011, 11:27 AM
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try here for outlets
http://magnatec.castrol.com/en/produ...tail/5W-30-A1/
As it says the A1 meets the relevent Ford spec 913 I wonder if the a5 is needed. It would appear Asda do the A1 for around 26




Richard
54 Plate 1.6 TDCI LX ~aspiring to be something else
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post #4 of 6 Old 11-22-2011, 12:13 PM Thread Starter
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thank you richard , will follow that link . malc .
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post #5 of 6 Old 11-22-2011, 12:20 PM
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Have to say that our 1.6 diesel went through a recent MOT without problem on some very old Halford own semi sythetic but it doesn't often do short stop start and gets properly warm each time its used




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post #6 of 6 Old 11-22-2011, 03:12 PM
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Diesels are generally not as sensitive to contaminated oil at MOT time
as petrol engines are, being that they are merely subjected to a smoke
opacity test. Modern engines consume and burn their own crankcase
vapours so any oil vapour is burnt and also adds to the emission count
in a Petrol engine. If an engine is "borderline" on emissions, changing
the oil can actually make the difference between a pass and a fail. If
the oil is old, it is more likely to produce vapour and add to the
emissions. That being said, modern semi and fully synthetic oils are
nowhere near as bad for that as the older mineral based ones.




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