preparation to switch to synthetic oil
hello, I am going to switch from minerial to synthetic engine oil at my next oil change, can i just plonk the synthetic in and run for 2-5k then change to clear the sludge out? and also what grade of synthetic would you recommend for a mild queensland winter (similar to winter in Florida or california i suppose)
Probably more than you wanted....
but here are some more links from the Mobil Australia site (most likely linked anyhow to the exxonmobil main site)
There is a little chat about Synthetic and Mineral oils
http://www.mobil.com/Australia-Engli..._V_Mineral.asp
Exhibit 'B'
http://www.mobil.com/Australia-Engli...es/Mobil_1.asp
Exhibit 'C'
http://search.exxonmobil.com/ledr/qu...guage%3A&ty9=w
Exhibit 'C' is a link list to individual oils which is............. interesting
For my 0.02c worth as far as Mobil oils go, I would put in Super XHP 10W-40 or 15W-40 with a new filter for 2500Kms then go across to the Mobil 1 SuperSyn 5W-50 or I feel more preferable with 15W-50 for the engine technology and assembly techniques of 10 - 15 years ago. It's for this reason that I would hesitate to put in the 0W-40 Mobil 1 SuperSyn as I have heard story's from people I know still in the mechanical industry about using superultramegalightin oils in older thechnology engines that have not been overhauled it has been changed over to the aforementioned and in the worst case spun a bearing.
I will be the first to say that I have never seen anything like this happening first hand, it is all hear-say.
But....
I do run Mobil 1 SuperSyn 15W-40 in my '92 S XR 8 (sequentially injected 302 Winsor) and I know it has massive sludge build-up (did when I bought it) it has just clocked 230,000kms and whilst I know it's very poorly internally, I do the oil and filter changes on it every 10,000kms and after 4 Years and a tick over 100,000kms in it (had 128,000kms on it when I bought it) the oil is coming out reasonably clean. The valve stem seals have begun to leak now and it has begun to breath a little heavy (read blow-by) so this is dirtying up the oil now. It has been a very strong (and still is) and smooth engine, but it has now reached the point where it requires a complete freshen-up and I will have a closer look then to see if there is any major damage
Please be warned I will revive this thread when that time comes (if I can find it of course)
So the long and short of it rob101 is by all means change it but don't go to the bleeding edge of oil technology as 'there exists the possibility that it may bite you'
I have only put the Mobil oils links here you may well have a favorite brand of oil that you might want to use. My only advice on that front is, if you travel interstate a lot you best go with something that is easily available. Call it 'insurance'
Hope some of this dribbling is useful :)
Boom n Zoom