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I have a co-worker who just acquired a 2006 Shelby AC Cobra Roadster replica made by Back Draft. While he's always admired performance Ford racers, he's relatively new to owning performance cars, his main hobby has been golf, and he might need some advice for what oils to run in this new-to-him...

The way this particular Chevy LS engine treats this type of oil has been extremely consistent in the 3 OCI’s that I’ve had analyzed, thankfully with no surprises. By about 4k mi into this OCI I ran out of Motul Eco-nergy 5W30, and not wanting to use up any of the Motul Eco-lite 5W30 D1G3 API SP...

I have Robinaire 3 cfm 2 stage AC vacuum pump, been using it for mine and family vehicles for almost a year now. It came with a small bottle of oil when I bought it. Figure it's time to replace the oil, but I don't want to pay the high prices for vacuum pump specific oil. Don't have the manual...

Ran this Motul 8100 5W30 for a little over 11,000 miles, using a Wix filter. Early consumption was at about 1 qt / 4000 miles, but the most recent checks for makeup oil on this OCI got to more than 1 qt / 2000 miles. I thought I would mention my plan to correct this with a short MMO cleaning...

Latest two UOAs on my shared sump V-Strom 650: As always, I'm wrapping up the OCI because I've never surpassed the mfg's recommended 3500 mi interval by this much before and I'm worried the wear contaminants might be reaching an unacceptable level. So baby steps for increasing the OCI. But...

Well I was brave this time and went to an OCI that I've never gone to before on an oil that I'm using for the first time. Previously the most OCI mileage I ever went to on this truck was about 6500 on M1, back in the pre-Visom days. After getting some form of ring varnishing and consumption in...

Here is the latest UOA report over a 3500 mile run. Previous run was also Motul 300V 10W40 double ester, two earlier runs were Mobil 1 Racing 10W40 4T. Shifting and clutching like a champ, and other than what appears to be 100°C viscosity shear from 12.15 cSt last time (and VOA) and a...

I am back with comments about my 01 Chevy Silverado 2500HD, 6.0L with 4 spd auto. It's about 5340 lb on the GM Pontiac factory's scales with (I was told at the dealer) 3 gallons of gas in it. I've owned it since new, and after 2 short OCI's with VWB, then went to M1 10W30 thinking it would be...

I promised I would do it, and it's come back. Motul 300V 4T Factory Line 10W40 motorcycle oil. It ran very well for the full distance to recommended oil change, almost 3500 miles. So I sent in an unused sample from the same 4L jug as the original came from. The oil seemed to lose it's...

In my 01 Silverado HD 6.0 auto, at 102k/mi now, I drove a severe service 2 - 5 mile lightly loaded city trips several times per day for six years at my previous job. It would barely warm by the time I reached my destination. Trucks lives in north Florida, see temps from 25°F - 100°F, and gets...

2150 miles this time... it was quite obvious shifting had gone into the basement for the last 500 - 600 miles. Blackstone thought the oil was perfectly fine, and again, probably dumped too early. Fill for this time was just under 2 quarts of API SN formula & 1 quart of API SM in the black...

Bike is used for commuting and sport touring, racking up these 2722 miles in under two months. OK, the bit of iron fuzz on the drain magnet at the end of the OCI had me concerned - like maybe double-stinting the oil filter was a very bad idea - but somehow Blackstone says my wear metals are...

First Post here for me. I've lurked around at Bob's for a while, and have read about all kinds of opinions about oil. I also had an introduction to lubrication in my mechanical engineering degree. I have It was a compelling case to change the oil and I put in Shell Rotella T 15W-40 and a...