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        General >> Problems >> Fully synthetic
        
(Message started by: jonnycab on Jul 23^rd, 2006, 3:34am)

Title: Fully synthetic
Post by jonnycab on Jul 23^rd, 2006, 3:34am

My 2.3 is due for an oil change & I was going to put my usual Castrol GTX Magnatec 5/30 semi-synthetic in.
But I was wondering whether I should go for the fully synthetic option.
Does anyone else on here use fully synthetic?
If so.....
Is there a noticable difference?
Are the oil change intervals really longer (10,000 to say 15,000)?
How did you completely flush out all the old oil ready for the new synthetic?

I've also heard that once you change to fully synthetic then you can't change back,...true or false?

Title: Re: Fully synthetic
Post by scorpio_man on Jul 23^rd, 2006, 7:41am

hi there

i'm using fully synthetic now. very runny stuff, so watch for leaks.

can't say i've noticed much difference from using a quality semi-synthetic oil though.

only got it because national (http://www.national.co.uk/specials.asp) do it on offer for £25, changed.

i didn't do a flush, but my lpg keeps the oil very clean anyway.

hth

Title: Re: Fully synthetic
Post by mr._floppy on Jul 23^rd, 2006, 10:04am

I get the Semi-Synthetic Oil + Filter Change ( £20) from National.

Good value , in fact the slight timing chain rattle I
used to get on start up has disappeared since using
semi-synthetic.

Title: Re: Fully synthetic
Post by taliban on Jul 23^rd, 2006, 7:45pm

synthetic oil is more 'slippery', so much so that a lot of engine manufacturers dont advice using it until the engine has done 5000 miles, this is so the engine can 'bed in'. synthetic should give better protection during cold starting etc. it is better oil but how much better than a good quality semi is debateable. if you do your own changes there are a few companies on ebay that sell oil in larger sizes than the standard 5ltr at very good prices.
engine flush is mainly a thinner oil that breaks down the old oil in the engine.
i normally add the flush, run the engine up to normal temp, turn it off and leave it for 15 mins then drain. i'll leave it to drain for as long as possible while doing other stuff before re filling.

Title: Re: Fully synthetic
Post by jonnycab on Jul 23^rd, 2006, 7:59pm

Changed it now & stuck to the usual Magnatec 5/30 semi-synthetic as Halfords were doing 25% off, so 4.5 litres was £20.
Also used my usual Wynns engine flush.
Maybe next time I'll think about the fully synthetic.
With the amount of miles I do then that will be in about 3-4 months. ::)

Title: Re: Fully synthetic
Post by Octavian_P on Jul 23^rd, 2006, 8:10pm

I use full synthetic oil in my 2.3, i can say it was a bit of improvement, the engine is more silent and starts better. Also it is said if the engine has a lot of wear, the thiner synthetic will get "eaten" slowly by the engine. Mine didn't "ate" a drop ;D

Title: Re: Fully synthetic
Post by taliban on Jul 24^th, 2006, 5:47pm

jonny, if you change oil often have a look on ebay, the oil works out a lot cheaper if you get in bulk.......

Title: Re: Fully synthetic
Post by jonnycab on Jul 24^th, 2006, 11:30pm

Cheers Taliban for the advice, but being self employed, whatever I spent on oil (well, anything for the car really) is tax deductable. So it doesn't really matter what it costs me :)

Title: Re: Fully synthetic
Post by dxt on Jul 31^st, 2006, 5:55pm

Hi .... Stick with Fords own 5..30. and a Ford filter. £20.00 for both from Ford dealers. My scorp purrs like a kitten with it.

Cheers d.x.t

Title: Re: Fully synthetic
Post by a900one on Jul 31^st, 2006, 6:35pm

I have used Halfords fully synthetic for a few years in my Granada scorpio and I now use it in my 98 cosworth. Change the oil after about 2000, as it will wash out a lot dirt, then change as you normaly do. I find the oil stays cleaner longer and possibly a few more miles per tank.