Dragonball Posted August 20, 2002 Share Posted August 20, 2002 OK Guys Have read the threads - tried to understand the logic / science and failed miserably (crashed and burned!) It's time for an oil change - and I'm gonna put through some engine flush (don't know if it's been done before - but not since I have had it) Which oil shall I put in? It gets quite a bit of use - fast road only To date it has had semi-synth 10-40 magnatex Shall it be fully synth 0-50 / 10-50 or shall I just clean through and replace with same Sorry if repeating elements of the other thread going - but lost the plot for now Also - resisted the chance to buy any Halfrauds stuff - made by Esso - any comments? Cheers Paul:cool: Quote Link to comment Share on other sites More sharing options...
Syed Shah Posted August 20, 2002 Share Posted August 20, 2002 Try Valvoline Synpower 5-50, its' what most people here use. Quote Link to comment Share on other sites More sharing options...
Branners Posted August 20, 2002 Share Posted August 20, 2002 I used Magnatec in my import for a good 2 years and had no problems at all, its a good all round oil. If you plan on running lots of boost then go for a slightly better oil like Valvoline which is what I used in my import for the final year of its life... JB Quote Link to comment Share on other sites More sharing options...
Dragonball Posted August 20, 2002 Author Share Posted August 20, 2002 Branners - Is that the semi 10-40? Cheers Paul:cool: Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted August 20, 2002 Share Posted August 20, 2002 If your engine smokes on thin "oil" but not on "thick" oil, it's only a matter of time before it does. Start thinking about a bit of an engine rebuild. Quote Link to comment Share on other sites More sharing options...
Dragonball Posted August 20, 2002 Author Share Posted August 20, 2002 Blimey m8 - whoa there! Not smokin' - thank God! Just time for an oil change @ 5000 miles Paul:cool: Quote Link to comment Share on other sites More sharing options...
tDR Posted August 20, 2002 Share Posted August 20, 2002 Originally posted by Paul E OK Guys Have read the threads - tried to understand the logic / science and failed miserably (crashed and burned!) It's time for an oil change - and I'm gonna put through some engine flush (don't know if it's been done before - but not since I have had it) Which oil shall I put in? It gets quite a bit of use - fast road only To date it has had semi-synth 10-40 magnatex Shall it be fully synth 0-50 / 10-50 or shall I just clean through and replace with same Sorry if repeating elements of the other thread going - but lost the plot for now Also - resisted the chance to buy any Halfrauds stuff - made by Esso - any comments? Cheers Paul:cool: Hmmm......... Engine Flush - The last time I drained a car of oil and used engine flush it blew it's head gasket the next time it was on the motorway. This led to having to get the head skimmed and pressure tested plus the new gasket and fitting and all the hassle of running around to a machine shop etc. I'm not saying it was the Engine Flush that blew the head gasket but I'd say it was a contributory factor. Some deposits in the engine are best left where they are................... Quote Link to comment Share on other sites More sharing options...
tDR Posted August 20, 2002 Share Posted August 20, 2002 Just found some evidence of what I'm on about: "Of course, like most things nowadays, there's a condition attached when using flushing oils. In an old engine you really don't want to remove all the deposits. Some of these deposits help seal rings, lifters and even some of the flanges between the heads, covers, pan and the block, where the gaskets are thin. I have heard of engines with over 280,000km that worked fine, but when flushed it failed in a month because the blow-by past the scraper ring(now really clean)contaminated the oil and screwed the rod bearings. " Taken from: http://www.fernblatt.com/longhurst/engineoil_bible.html Quote Link to comment Share on other sites More sharing options...
Barry Posted August 20, 2002 Share Posted August 20, 2002 Originally posted by Branners I used Magnatec in my import for a good 2 years and had no problems at all, its a good all round oil. If you plan on running lots of boost then go for a slightly better oil like Valvoline which is what I used in my import for the final year of its life... JB What do ya mean, 'final year of its life'.!? I've not killed it yet! Quote Link to comment Share on other sites More sharing options...
eyefi Posted August 20, 2002 Share Posted August 20, 2002 that site that thunder just posted has some xlnt info. look at the bottom of this for a couple more. basicaly, the cold rating on an oil (the first number) is the base that makes that oil and its got additives to make it not thin as it gets hot. so the 5w50 is actually a 5 weight oil that wont thin any more than a 50 weight oil. i think yr best choosing an oil to suit its purpose. a 5 weight oil is designed to b used at around -30degc ambient temp. personally i dont think ive seen -30deg in yorkshire. i dont really see the point in using a 5 weight oil as the base for yr oil when it will never see the situation it was designed for (unless yr in canada etc). also engines r designed to run a particular grade of oil. the supra engine is designed to run with a base oil of 10 quite a thin oil but not the watery 0 and less so 5. my 2p Quote Link to comment Share on other sites More sharing options...
Branners Posted August 20, 2002 Share Posted August 20, 2002 Originally posted by Barry What do ya mean, 'final year of its life'.!? I've not killed it yet! I like to think of it being dead as then I know I cant have it back... good lord the UK spec cars are slow as standard And yes, it was the semi-synth, seemed to do a good job, didnt lose any oil at all and when I changed to Valvoline I blew a crank oil seal at the next track day (probably totally unrelated). I once used Shell Helix 0w40 in my mkiii, it all disappeared in about a month, didnt blow out the gaskets, must have blown out the engine but it never smoked in a serious way. Since then I have avoided 0w oils, especially on any cars with a bit of mileage on them. I think Im running Valvoline in my UK spec and thats on 113,000 miles and doesnt smoke at all. JB Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted August 20, 2002 Share Posted August 20, 2002 I didn't think anybody flushed engines since the appearance of synthetic oil (1980s?). What sort of muck have people been putting in their Supras? I generally like Mobil 1 but it is too thin for the Supra. If you use decent synth or semi-synth oil you won't have any deposits in your engine to worry about. I've had my car for 4 months now (recorded mileage 50,000) and done about 4500 miles - it's used nil (not a drop of) 10/40 oil. Quote Link to comment Share on other sites More sharing options...
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