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Weird enough the fl1a filters have had nitrile adbv for years even though all other filters have silicone

That's why I wanted to test this grade. Everything i found was many years old or the 20w50 version. On Valvoline website the 20w50 flavor still lists zddp numbers like you mentioned but data sheet for 10w30 is weaker like my voa confirms

Now that is more of what I was looking for. But after seeing the amsoil 10w40 one a few posts down it looks like what I was looking for too. Just wish I would have seen that voa as I sent in same oil also a couple days after I shipped vr1 to Blackstone! But more Data is a good thing

Sent a sample in of conventional VR1 10W30 any google searching brought up old data or for the 20w50 flavor. I was thinking of using it in my flat tappet cam motor but didn't believe Valvoline data sheet that showed lower than average zddp compared to other oils in the category. This VOA is...

https://www.amazon.com/STA-BIL-Premium-Blade-Cleaner-Lubricant/dp/B092FNHBQ1/ref=asc_df_B092FNHBQ1/?tag=hyprod-20&linkCode=df0&hvadid=532546154530&hvpos=&hvnetw=g&hvrand=10891486818543958348&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9012803&hvtargid=pla-1395720808514&psc=1&mcid=...

Originally Posted By: camrydriver111 I asked this question before and I got two answers: fall and spring. The argument for fall is the oil has the strongest TBN, and the best cold-performance when it is fresh. The argument for spring is the oil gets beat up in the winter. The viscosity is...

Total About 14k year In the 2014 focus, bought some asmoil signature 5w20. My guess was late fall for the oil change while its above 50f still outside. that way the oil is fresh for the abuse winter will give it

What's your opinion when to change the oil for a one year oci? Before winter to have a lot of tbn for the harsher winter conditions in michigan, or just after winter to stretch the tbn out with less harsh summer conditions?