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Gulf Western - Premium Gold 15W40 #5289048 12/09/19 03:43 AM
Joined: Jul 2015
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SR5 Offline OP
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I've never paid much attention to Gulf Western Oil, but it's an Aussie own company that has been around for just over 30 year.

Their Premium Gold 15W-40 just caught my eye, it's a semi-synthetic that is on sale right now at SCA at just under $22 for 5L
API SN-Plus, SN/CF
KV100 = 14.9 cSt
TBN = 6.5 (ASTM D2896)
SA = 1.2 % (ASTM D874)

It's the first SN-Plus 15W40 that I know of. Also it seems to have a lowish TBN for a rather high Sulphated Ash (SAPS) level.
Maybe elevated ZDDP ??

Does anybody know anything else or have any experience with this company or oil ?


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Valvoline DuraBlend 10W40 SN & A3/B4 semi-synthetic + Valvoline V06 synblend media filter
Re: Gulf Western - Premium Gold 15W40 [Re: SR5] #5289053 12/09/19 04:09 AM
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peejaycruiser Offline
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I've used their Top Dog diesel oil before, contacted them to see what oil to use for a new rebuild and they said this. Found it fine in use nothing to complain about.


02 Subaru Liberty RX 2.5 Shell Helix Ultra 5W-40 OEM Filter
96 Toyota 80 Series 1HZ Sakura C-1112 Nulon High Torque 15w-40
Re: Gulf Western - Premium Gold 15W40 [Re: SR5] #5289055 12/09/19 04:26 AM
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Silk Offline
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I used the Top Dog in my XT600 - all this talk about improved shifting on bikes, I've never noticed it....except for this oil. Turned a nasty knotchy gearbox silky smooth. I have used a few of their oils...10W-40, and gearoils, all good as far as that goes.


1987 BMW R65 - Penrite VTwin 20-50
2005 Nissan Expert - 5W-30 Castrol Edge
1996 Volvo T5 - Penrite HPR15 - 15W-60. Ryco syntec filter.
Re: Gulf Western - Premium Gold 15W40 [Re: SR5] #5289080 12/09/19 06:01 AM
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For comparison

Nulon 15W40 mineral, API SL/CF
Kv100 = 15.09 cSt,
TBN = 6 (D2896)
Sulphated Ash (SA) = 0.8% (D874)


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Valvoline DuraBlend 10W40 SN & A3/B4 semi-synthetic + Valvoline V06 synblend media filter
Re: Gulf Western - Premium Gold 15W40 [Re: SR5] #5290009 12/10/19 04:24 AM
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I spoke to Gulf Western today, and they were most helpful and open. Their premium Gold 15W-40 SN+ has regular ZDDP levels.


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Valvoline DuraBlend 10W40 SN & A3/B4 semi-synthetic + Valvoline V06 synblend media filter
Re: Gulf Western - Premium Gold 15W40 [Re: Silk] #5290013 12/10/19 04:35 AM
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Originally Posted by peejaycruiser
I've used their Top Dog diesel oil before, contacted them to see what oil to use for a new rebuild and they said this. Found it fine in use nothing to complain about.


Originally Posted by Silk
I used the Top Dog in my XT600 - all this talk about improved shifting on bikes, I've never noticed it....except for this oil. Turned a nasty knotchy gearbox silky smooth.


Speaking to Gulf Western today about ZDDP in oils, they suggested I consider their Top Dog range

Quote
You could also consider our diesel engine range which also carry API SL or higher petrol engine performance and have zinc levels of over 1,000-1,250ppm (0.10 – 0.13%)

Top Dog XDO 15W-40 (mineral) has around 1,100ppm zinc
Top Dog Global Mineral 15W-40 has around 1,250ppm zinc
Top Dog Global Plus 10W-40 (semi-synthetic) has around 1,250ppm zinc


Good honest answers from Gulf Western.


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Valvoline DuraBlend 10W40 SN & A3/B4 semi-synthetic + Valvoline V06 synblend media filter
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