I use Syntrans in my LT85 and have done for a few years now. The box is holding up well to the 4BD1T (touch wood), despite lots of long distance touring and towing. The function of the synchros improved noticeably once the oil had bedded in.
The info I have found so far on BOT 402 is attached.
Thanks mate.
It's a little thinner than Syntrans 75W-85 @ 100*C and with that Opel approval I'm guessing that's what it was originally brewed for.
There's now four different Syntrans blends here in Australia, one for ZF gearboxes (Syntrans Max) the universal Syntrans 75W-85, Syntrans B for the six speed (Tremec ?) in the turbo Falcon (and IIRC it's about the same viscosity as an ATF. That might be a good one for the LT77) and Syntrans M 75W-90 for the trucks.
I simply cannot find Syntrans M 75W-90 over here.
Not readily available anyway, and not close by.
Syntrax GL5 isn't a problem, but the diffs and TC have been done.
The LT230 already sounds better and the heat generation is much less.
FWIW Castrol used to be a bugger for using different names in different markets too and the same name for something different.
eg. Syntrax here was/is a full synthetic PAO/ester GL4/5 transaxle fluid and in the UK the product with the same name was only a semi-syn/not near as good fluid, possibly very similar to our Multitrax 75W-90.
found a 20l drum of PEAK 5w30 Full Synth $188.00 at the local AutoOne
never heard of it - writing on the tin suggests it might almost be OK for a TD5 / Puma ?? But if its good oil hard to pass up @ that price.
hopefully its not a one off
can't find anything on the net about it.
opinions ??
apologies for the quality image taken with my phone
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I've been buying Penrite Diesel SP (now re-named Enviro + 10W-40 which is an E4/E6/E9 oil, ie. a heavy duty diesel oil, not petrol/dual rated and I hope to God it's still as robust as Diesel SP otherwise I'll have to find a new oil) for $165 which is a walk in off the street price.
I'd trust a low SAPS API CJ-4/ACEA E4/E6/E9 oil in a TD5 as they have balanced the lack of phosphorous/zinc with better/more exxy anti-wear/EP chemistrickery, but I wouldn't use a low SAPS petrol oil like that Peak oil with a unit injector engine.
There's been a few cam issues over the years with low EP oils like the ILSAC GF-4 10W-30 Mobil 1
Just my opinion.
I have some interesting graphs here I need to digitise one day.
They show the change in engine oil viscosity in diesels - mainly due to soot loading.
I also have graphs from a 12 year french study using canola-based biodiesel which shows that fuel dilution when using biodiesel almost perfectly compensates for the viscosity increase due to soot loading...
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