Disco engine meltdown

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Originally posted by PLR

On the Web came across mention of a Land Rover service bulletin .

Number 0009 dated 24/04/98 relating to WA Disco broken rocker arms

Only mention of bulletin though no details .

Also , not from bulletin , mention of rocker arms with a casting number ending in ..... 17.... 18 .... 19 .... or 20 as being the problem ones .

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That bulletin is only for noisy rocker arms. The pushrod cup comes loose in the rocker arm & causes a rattle.
#'s 17, 18, 19 & 20 were the affected ones.

further to Mike's posts on oils, the amount of Group I additive carrier oil used in Mobil 1 was pretty tiny. These days they use esters and alkylated napthalene's instead as a carrier. So, Mobil 1 has always been a synthetic, and their base oils always were 100% synthetic, it's just that the additive package used to use a very small amount of Group I mineral oil to mix it with.

Most euro oils that use Group III oils (eg Motul, Fuchs, etc) use terms like 'techno-synthese' or 'molecularly-converted' to differentiate from their full synthetics, which are usually PAO/ester blends.

In the scheme of things, it appears that what is used in the base oils only tends to have a bearing on the oils life, far more important is the overall package, particularly the addditives, which these days are exceeding 25% of an oils total volume. eg, talking to heavy vehicle operators, Caltex's Delo 400 gives similar results to Mobil's Delvac 1, except that they can take Delvac 1 to around 100,000km before changing it, saving on service costs/downtime. The oil Shell blends for the Ferrari F1 programme uses a blend of oils to give the desired results, including those 'pretend' synthetic Group III oils, so they work pretty well.

Oh, and to stir the pot further, most peoples favourite oil brand on this forum calls Group III (hydro-cracked hydrocarbon ) oils 'synthetic'. https://www.aulro.com/afvb/

I agree with the 4k price being to high, just get a recon engine you save a **** load in labor costs.

Or you could wait a while if fuel prices keep climbing you might be able to pick a whole disco for 2k. https://www.aulro.com/afvb/

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Originally posted by Frenchie+--><div class='quotetop'>QUOTE(Frenchie)</div><div class='quotemain'><!--QuoteBegin-p38arover
A fellow LROC member has just had a new engine fitted into his pre-2000 TD5 - the original cracked the block. Apparently, this isn't uncommon for early TD5 engines.

Ron

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Do you know how much that cost Ron?[/b][/quote]

No, I don't.

Ron

Mechanic told me it was $14000 to replace the TD5 engine but I would hope that is a new engine at that price.

LR have just doubled the price of a new TD5 so dont expect much change from 20K :x :x :x