Semi or Full Synth Oil in a D24tic?
 

What oil do other people use in a D24Tic? I'm tempted to go full fully synth, have read of one owner who has used this for 110 thou but have also read that it can 'leak' out of various places due to it's 'thinness', will need to buy my oil this week for my oil change, about to buy semi-synth (from Opioils, Redruth). Grateful for any feedback

i used millers semi sythetic
had no leaks on the engine and the engine sounded better than ever
was going to use castrol magnetec but was way to expensive

j p liddy
 

i also use millers semei synthetic i have been useing millers diesel clean
but i am concerned about the price now about £60 for 5 litres i have run out but might go for it again.

The synthetic/semi question has been deabated before if I remember correctly.

Personaly I would use normal semi-synthetic. I've tried synthetic in another older car and then racket the engine made was unbelivable and oil pressure was almost no existant, it is simply too thin for an old engine. The other reason is cost, I can get 25 liltres of semi from Costco for less that the price of 4 litres of synthetic. When running on veg oil, I'm changing the oil every 2.5K miles which sometimes means every 2 weeks!.

If I had a nice rebuilt/blueprinted engine then I would consider using sythnetic, but not on an engine that has done 150K miles and no idea of the history for the 1st 120K miles.

Regards
TFB

Thanks everyone, I'll go for the semi-synth. Opie oils at Redruth (opie-oils co uk) have some reductions at the moment and am ordering 8 litres of Silkolene XTR 10 40 semi-synth, including delivery £33.08 which seems a good price. Tescos had their own diesel semi-synth on offer recently, it obviously meets all the specs and requirements, could have got 8 litres for £24, however, I am no doubt being silly but just didn't fancy using a supermarket brand oil whatever it's specs

Interestingly, the following I've cut and pasted from the net explains why using an extra quart in these engines above the 7 litres helps with the problem of oil circulation in these engines due to the one really long run in the design, spoke to my mechanic about it but he's a bit worried about doing it in mine:

"Overfill Crankcase to Maintain Oil Pressure? [Tip from Brandon] I've had issues relating to delayed oil pressure while starting on hills or inclines due to the problem noted above and my fix is to overfill by 1 quart of oil and maintain this level. I know it's safe and I've proven this when I bench ran my engine after the rebuild. The turbo oil return was left open by mistake and the overfill by a quart never ran out onto the bench. There is 21mm of clearance from the bottom of the crankshaft at its lowest point to the level of the oil return hole and peeking in with a flashlight and small mirror shows almost 2 inches of clearance from the crankshaft to the level surface of the oil. To hit the crank with oil you need to overfill by 2 1/4 quarts."

I'll use cheap supermarket oil as a flushing oil when I get a new car. I drain and fill with cheap supermarket oil, run it for a day or two and then put decent oil in it.

Regards
TFB

Try these, If you book or take a printed quote in it's £37 for the best stuff

http://www.national.co.uk/order_oil.asp

http://www.national.co.uk/basket.asp

I wouldn't get anything else from them due to the price but these deals look good to me, no max engine size either.:thumbs_up:

Thanks for that, it's a good deal but I've already booked into a VW diesel specialist for my oil (+ flush) filter change plus other stuff and already managed to source one of the big oil filters for the D24T, most suppliers sell you the small one, not so good, and I want to keep in with this mechanic, he's given me a lot of time for 'nothing' and has a great reputation. Still unsure whether I should have gone for full synth, some internet write ups on people who have always used it in a D24Tic and swear by it but lots of conflicting stuff too. Dunno if you've read all the right ups on Magnatec but it is apparently technically not really a semi-synth, it's a 'synthectically' produced oil, a rather overpriced oil according to a lot of people, lots of stuff about this if you google it. Good deal though, thanks

I have never flushed, always used Shell Helix semi synthetic in my 850 tdi and now in my D5. Just the 850 uses 10/40.

In the end I spent a bit more money, didn't go for the Silkolene but have bought ***h's Titan XTR high performance 10 40 semi-synth.

Tried editing this, the forum self-editing obviously thinks my oil has a rude name, lol.., can't take out the asterisks