Hi all, I know there are plenty of threads re: best oil for your Cossie but I was hoping somebody out there could please advise me on the best way forward. I have a 4wd which has been tuned to around 300 bhp but was last put on the rollers in 2009 so not sure if power is still that from what was recorded back then. I do very few miles in her and most of the time she doesn't get treated harshly (general running around town and down the motorway cruising at a consistent speed) however for the last two oil services I was recommended Magnatec 5w30 a3/b4 and have obliged. The car seems to use about a litre every 800-1000 miles anyway and does gave a slight leak from around the dipstick but nothing major. Looking on the Castrol website it recommends 10w 40 Magnatec for standard spec, otherwise Edge (which of course is slightly more expensive). I appreciate Silkolene seems to be the favourite but I don't race the car and really cannot justify the cost. That said somebody else has recommended 5w 50 Millers which has a high zinc content, which I am told really benefits the engine. So the long story short is......will it be ok to continue to use Magnatec 5w30 or should I go for Millers or something else...hopefully somebody can suggest something that's around £30 for 4 litres?!? thanks in advance

 

Speak to oilman who trades on here cant recommend his advice enough and can receive discount .
I use the silkolene/titan pro 10/40 or 10/50 and 5/40 for colder months.
For 5L its above your budget but oilman can give you options

 

5w30 will be like water in a yb when up too temp it's an old engine get Titan 10w50

 

5/30 is zetec oil which is Way to thin. If it's just a little cruiser with no hard driving then I'd use half decent 10/40. If it's going to get abuse now and again then I'd use Millers CFS 10/50 NT fully synthetic.

 

Ford say 5/30 in the manual which is odd with the extra heat they can create.

 

I don't care what ford say 5w/30 is too thin lol I put 10w40 in mine as it's on tap at work if I had buy oil I'd use 10w50

 

Only ever used 10/40 in mine.

5/30 is way too thin, I bet if you changed to 10/40 it wouldn't use as much oil

Steve

 

Mobil 1 motorsport for me and if your cossie engine is using oil get one built by a professional builder, there are a few on here one of which can also give out very handy marital advice and that's free

Steve

 

5w30 has never been the oil for a YB even when they were new.
High efficiency, fine tolerance modern engines are ok with it, but never a Cossie.

Ford probably recommend it if you live at the north pole

Mobil 1 Motorsport for me.

 

Thanks to everybody for the advice. I have since contacted oilman who has suggested a range of 5w40 synthetics given my cars spec and usage. As soon as the old girl has completed another 250 miles, I will be sorting out the service. It's a toss up between the following all around £30 for 4/5 litres.

Motul 8100 X-Cess, Millers XF Longlife, Fuchs GT1 XTL/Supersyn, Gulf Formula G, Shell Helix and Mobil Super 3000.