For the first time in 25 years, Lycoming has just updated the oil recommendations: SI-1014N local copy
Wow, thanks @Ultranomad
What has changed, of relevant to operation?
Additional types of multigrade oils are now recommended.
Why? To me the artical very much seems to recommend a multigrade oil.
I wonder if continental’s recommendations would be any different?
Sae 40 is recommended for 0 Celsius to 32 Celsius however 15w50 or 20w50 works for -18 up to 32 which works fine for most of europe i’d say…
Mmh… “fixing” an oil leak by simply using thicker oil is not really a fix, isn’t it ? :)
There’s always a religion about the oil people use.. in Florida or very warm places on the planet I agree for not using Multigrade oil however in Europe, where you really have like +35 one day and +10 the next day over -5 a week later IMHO Multigrade does make sense…
If you have a preheater and and outlet available however it’s a different story … ;)
OneEightyTwoTango wrote:
Sae 40 is recommended for 0 Celsius to 32 Celsius however 15w50 or 20w50 works for -18 up to 32 which works fine for most of europe i’d say…
SAE 40 single grade ashless dispersant oils are recommended from –18°C to +32°C (at least). My club (at 60°N) uses such oils – e.g. Aeroshell W80, Total AERO XPD 80 – exclusively. (Except during engine break-in of course.) Temperatures below –18°C are seen only once or twice a year and we are using engine preheat anyway whenever the average temperature is below +10°C. It works very well. We fly ≈1100 hrs/year with four aircraft and have not seen any oil-related problems.