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In addition to increasing the sump capacity, there are a few other things to address. I don't know anything about this particular engine, never having built one, but there are many similarities with other engines, regarding to bearing clearance, etc. I see in my Mahle bearing catalog that...

I'm not surprised by the oil consumption. A typical Nextel Cup engine uses 1 quart per 100 miles. Very low ring drag.

Originally Posted By: Trinten Thanks for the additional suggestions and info guys! I'm using hydraulic rollers, instead of flat tappets, so I *thought* that meant I didn't need to worry about the zinc and phosphorous as much - or am I mistaken on that? I figured I'll go ahead and try Mobil's...

Originally Posted By: 68nova Has anyone who has used the XP1 racing experienced a noticable amount of slugde in the oil when it is removed? The engine it is used in is a 327 NHRA stock eliminator engine. The oil is changed about every 10 runs. I've never heard of any oil forming sludge in ten...

We've been using it here in Houston for a long time (Polydyn is here). Normally it will pick up a racing engine 10 hp on the dyno. Takes about 4 dyno pulls for it to work. I picked up some gas mileage in my E430. Not much, but some. So I keep putting it in. I get it cheaper than $24 a bottle...

Thank you JAG. That is good info. I will pass it along to those that may be interested.

HTSS TR, I'm skeered to run 20w down here in Houston, especially in the summer. I think for now I'll stick with the Euro Syntech as its on MB's 229.5 list. Both of the oil people I know have told me that the AW additive package in the oil will do nothing to protect the hypereutectic aluminum...

I've been running the German Castrol for approximately the last two years. I was wondering if the AW (ZDDP) packages normally found in oil would work on aluminum as well as cast iron. And if not, would an oil made from esters, like Motul, be a better choice? I love this car and plan on driving...

I've been doing a lot of reading lately about oils, but it is all concerned with engines that have cast iron cylinders. As I understand it the ZDDP is a polar molecule and is attracted to ferrous metals. What about an aluminum cylinder wall like on my E430? What type of oil would protect the...