Perkins 4236 (M90) what engine oil?

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shoc

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The manual for my Perkins 4236 says engine oils should be API CC/SE but my supplier no longer stocks it and it appears very expensive to buy online about £80 for 8L

Is this still the spec for the 4236? Elsewhere on this forum someone says API CG/CH but no backup or link to how they recommend this.

Am puzzled and a bit stuck...
 
shoc said:
The manual for my Perkins 4236 says engine oils should be API CC/SE but my supplier no longer stocks it and it appears very expensive to buy online about £80 for 8L

Is this still the spec for the 4236? Elsewhere on this forum someone says API CG/CH but no backup or link to how they recommend this.

Am puzzled and a bit stuck...
Click to expand...

Morris Lubricants

Golden film SAE 20 API CC, or Golden film SAE 20W50 API CC, or Marine 10W40 API CC
 
Last edited:
shoc said:
The manual for my Perkins 4236 says engine oils should be API CC/SE but my supplier no longer stocks it and it appears very expensive to buy online about £80 for 8L

Is this still the spec for the 4236? Elsewhere on this forum someone says API CG/CH but no backup or link to how they recommend this.

Am puzzled and a bit stuck...
Click to expand...

I run a perkins 4236 and previous owners had her for 11 years and left oil bottles on the boat the CG/CH or 10w 40 or 5w 40 has worked fine, I also had her serviced last year and oil used was 10w 40
hope this helps
 
Been running a now 45 year old 4236 for 20 years.......The one previous owner was fastidious about the frequency of oil changes (at the end of every season at least)....and I have followed suit. I used to use Duckhams 20w/50......now I always use a suitable MINERAL oil of as near to that as I can get....NEVER a synthetic. At the moment there is in Wilko shops a 20w50 mineral oil which would seem to be ideal....and its not expensive. These engines were built to last .....and so far....mine has been without major problems. Treat it right and it will look after you.
 
if the Engine has been moved ot synthetic and has run for a number of years then there is no issues , these are Tractor engines marminised
old engines running synthetics is not an issue.
Ran a 1977 VW bus on synthetic no issues for 11 years
It used to be that the experts would recommend, for any older vehicle, not to switch from conventional to synthetic. This advice was based on concerns about synthetic oils containing ester compounds that might interact adversely with engine seals in cars that were higher mileage, causing oil leaks.
Today, these concerns aren’t really valid any more. Automotive experts now recommend that you can seamlessly switch from conventional to synthetic without worrying about oil seal wear
In older cars made before 1990, they actually want some formation and buildup of engine sludge. Their oil seals and gaskets may not be as tight as in newer cars. Sludge will form over time in the engine environment and and collect along these areas, effectively functioning as a sealing mechanism. That’s a good thing.
If the synthetic oil, with its advanced detergent package, is introduced into such a system, it will seek to clean out sludge from the engine, meaning there’s a chance it could remove some of this sludge that was acting as a seal. Now you have a potential oil leak.

There is always a diffrence of opion on anything and if it is working for you then no issues keep doing what your doing if you want to change to a synthetic just oil change and change all filters and keep an eye for leaks
my Perkins is 42 years old just a wee nipper
 
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