Austin' 818C Build

[Dave 53]

I have a friend that's a professional Subaru race car mechanic. I asked him what weight oil I should use and he said, "Motul". I asked again, what WEIGHT and he said "Motul". Yaa, but what weight? "Motul".

I have been using Motul Sport 5W40, which isn't made anymore. I have enough for one more change which I do every 9-10 track hours. I routinely get it up to 260 degrees and have had a couple of accidental 290 degree peaks at 105 degree Southern California track days. Blackstone analysis has said the oil was fine after those temps and hours.

When I figured out they stopped making the Sport 5W40, I panicked and scoured the internet for any old stock - none. Seems it was replaced with 300V Power which is probably the same stuff in a different container and sits between the 8100 and 300V Competition products. Then they discontinued that too! So now it's 8100 or 300V Competition - no more in between product. I found only one legitimate site on the whole internet that said they still had some 300V Power in stock. Probably too good to be true. I ordered 40 liters and figured I'd get a call saying they actually didn't have it. To my surprise, it showed up at my door. I opened the boxes and they sent me 300V Competition! Score!!

I just checked Amazon (shipped from Newparts) and they say they have 300V Power for $15 / liter. I don't believe it, but if it's true, I'd jump on that deal, at least for a track car. I can't remember for sure, but that's who I might have gotten my deal from, so maybe you'd get Competiton from them like I did!

Seems the 8100 is prefect for a street car.

RCM Race oil filter.