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mini1989
PostPosted: Tue Mar 11, 2008 6:07 pm 
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I have done a few research and come up with 3 brands of engine oil that I should be using for the following engine: Year 1994 1275 Automatic running a carbie. Following are the brands and grade for engine oil recommended: castrol Magnatec 10W40 or GTX2 20W50? Penrite HPR10? Shell Helix Super 20W50 or multigrade 20X50? Please vote at your best knowledge and thank you once again for your input.
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speedy
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PostPosted: Tue Mar 11, 2008 6:15 pm 
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drmini in aust wrote:
I've had 3 matics on the road- a Morris 1100 auto, a Morris 1300 auto, and 998 MiniMatic. All 3 are basically the same box.

The factory MiniMatic handbook (1969) says-
"SAE 10W/30, 10W/40, or 20W/50. Additional additives are NOT to be used under any circumstances".

I'd stick with 20W/50 in an old box, as the oil does get pretty hot. If running 10W/30 I'd want a cooler on it. :wink:

Don't run semi-synthetics like Castrol Magnatec 10W/40 etc, the bands and clutches won't grip.


That eliminates one of your options. I'd go with K-Mart KMX or Valvoline 20W-50. Like I recommended before, do a search, there is heaps on here that will help you make up your mind. 8)

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drmini in aust
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PostPosted: Tue Mar 11, 2008 6:17 pm 
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Stay away from grades with anti-wear additives, this means don't use Magnatec. It's a good oil but not in an automatic, the plates and bands will slip.

My original drivers handbook for a Mini automatic says use 10W/40 or 20W/50 grades, with NO antiwear additives.
Any good name brand 20W/50 will do out here.... it's hot. :lol:

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Morris 1100
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PostPosted: Tue Mar 11, 2008 6:26 pm 
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The handbook for the 1100 Automatic says...
Quote:
Automatic Transmission---- 10w/30 or 10w/40 multigrade MS oil.
Use no additives. Do not exceed recommended change period.

I would go with what the doc says. These boxes get a workout.
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drmini in aust
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PostPosted: Tue Mar 11, 2008 6:38 pm 
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Morris 1100 wrote:
The handbook for the 1100 Automatic says...
Quote:
Automatic Transmission---- 10w/30 or 10w/40 multigrade MS oil.
Use no additives. Do not exceed recommended change period.

I would go with what the doc says. These boxes get a workout.

I would change it every 1500 miles, the filter too. Most failures in these boxes are due to dirty oil.
Cheap 20W/50 changed often is better than exxy oil left in too long.:wink:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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