Difference between petrol oil and diesel oil?

ticklebear, Jul 23, 9:14am
What's the difference! I noticed Castrol Magnetec 10w-40 claims to be ok for both petrol or diesel!

snoopy221, Jul 23, 9:23am
A LOT detergent ratings for diesel oil are higher.
Bottom line DO NOT USE PETROL OIL IN A DIESEL.

mrfxit, Jul 23, 9:28am

thewomble1, Jul 23, 10:37am
I have always believed that 'diesel' oil is OK to use in a petrol engine but not 'petrol' oil in a diesel unless stated on the containers.

pdc1, Jul 23, 11:07am
Used to be, but now petrol cars have catalytic convertors and these don't like some of the additives that the diesel oils have e.g., zinc

thewomble1, Jul 23, 3:21pm
Thanks for that.Diesel oil is a 'better' oil because of the higher pressures etc on bearings etc.

floscey, Jul 23, 9:53pm
has a SM petrol rating for its primary use and a secondary RatingCF for diesel engines around 1991 .

tazcsv, Jul 23, 10:02pm
Iv always used Magnetec in my turbo legacy and vx deisel land cruiser never had a problem so they must be right when they say its for both.

bellky, Jul 23, 10:05pm
Oh I see, because you've used it in both then 'they' must be right. Great logic there.

tazcsv, Jul 23, 10:11pm
Well it states on it that it can be used for both so i have tried it and it works.

mrfxit, Jul 23, 10:39pm
What you ppl are thinking of is called "multi fleet oil"
It's suitable for most LIGHT DUTY MODERN engines of either diesel or petrol
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THAT bit = "LIGHT DUTY MODERN engines"
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The bigger the engine + heavier the loads + the older the engine =more reliance on 100% diesel engine oil

jason_247, Jul 23, 11:04pm
bear in mind there is now a difference between diesel oils and diesel oils

you can by DPF safe diesel oils now
normally around $80-$100 for 5L

these oils MUSt be used in vehicles fitted witha diesel particulate filter

i.e. almost all euro and american diesels after 2005

can cost upwards of $10000 to fix if you block them by using the wrong oil