Feb 11, 2024 · It's not how thick or thin the oil looks, it's the HTHS that ultimately matters, amongst other things. View attachment 203361 And this is a VOA for Mobil 1 0W-50 Racing …

Nov 24, 2013 · Right now my ‘68 Skylark with a rebuilt 462 has Valvoline 10W-30 conventional oil with a bottle of Lucas TB Zinc Plus added to it. I only have about 700 miles on the car since …

Jul 11, 2010 · This oil is fine for your harley.I have been using this in my 09 fat boy with no issues.Oil changes every 3000 mi.The winters are short and summers are hot,humid and …

Mar 16, 2021 · I used to be a straight weight oil in OPE, but since Briggs started recommending 5w30 synthetic as the 1st choice for oil, I have been using mostly full synthetic oil of various …

May 28, 2004 · Wanted to get some opinions from the board regarding Valvoline VR1 20W-50 vs. Brad Penn 20W-50 Racing Semi-Synthetic. I'm using the Valvoline VR1 in my '89 Porsche …

Dec 30, 2006 · Valvoline VR1 has very high phosphorous and zinc levels (nearly double what would be in a normal oil at 1300 and 1400ppm respectively) tailored towards race-oriented …

Jun 14, 2011 · VR1 or V-twin? Here are my thoughts: MOBIL 1 Pros: Synthetic, longer oil change advantages, good ratings on HD forums Cons: Price, UOA's saying it thickens to over 60 Wt. …

Dec 18, 2009 · It is not made for street cars with long oil change intervals. If your running a daily driver go with the white bottle. If you have a street/strip car you can run the VR1, just make …

Nov 30, 2004 · VR1 is more or less a street oil with high ZDDP that makes in unsuitable for most vehicles with a catalytic converters, it's perfectly fine for any engine without a cat that's being …

Dec 22, 2019 · The engine builder said to use 10W30 so I was thinking about switching to VR1 Synthetic 10W30. I've already decided to run the Ford Racing oil filter thanks to some helpful …