99 V70 R rough idle after warm up and stalls Topic is solved

[balzybenzy]

As per above valvoline dexron6 being backwards compatible with dex3, I dunno. The assumption is yes. I called Mobil tech office about delved atf 236.90 being reverse comp with all Mercedes 236.10, .12., .14? They did not know. Delvac atf is listed only certified for Mercedes 236.90 and Allison trannys. And delvac is synthetic, four jugs 5L $90 at Walmart. I might test dex6 on my 2001 Volvo s40.

I do want to note a caution that valvoline max life being multi vehicle compatible, with respect to elemental analysis of Honda, idemitsu, n valvoline max life on bobtheoilguy.com.

And that is valvoline is high in zinc and 600ppm phosphorus, double the first two atfs. Phosphorus binds four oxygens PO4 and is found in manydetergent cleaning products. Phosphoric acid H3PO4 in Coca Cola dissolves a steel nail when left over night. 10 times stronger than battery sulfuric acid, 100 times more corrosive than chlorine! After reading that I won’t go to Walmart n pay $30 for 5L that may damage my grant. It might be good product for one week train flush, but not good for long term Trent life over 500km.

This being said, acidity in valv max may be stabilized or neutralized by zinc, used as negative anodes and corrosion protection of steel products. And there maybe other stabilizers. In my opinion acids and oxygen is bad for tranny gear metal, even though Mercedes certifies it for 1999-2003 ML suvs. I will stick to synthetics like Fuchs titan, mogul, moly, pentosin oils and atfs all made in Germany.

The purpose of all atfs is to lubricate and adhere to metal gears without foaming like oil which traps oxygen and causes corrosion and sludge. A video of this is on omega.co.uk lube products website.

Metal treatments like Teflon, and duralube high molebdynum content pile like Quaker state. Maybe help with lubrication, but may reduce adhesion of atf to metal gears at higher trang temps when all oils loose viscosity.
Not much papers or opinions on this.

[balzybenzy]

I have read from benzworld.com and Mercedes dealer specs doc site that 236.14 ATFs are reverse compatible with older 236.12 and 236.10 5spd tranny specs. And valvoline maxlife compatibility chart states maxlife ATF is compatible with 5spd but not newer 7spd Mercedes trannys. ATF certa are very confusing, and at times contradictory and not reverse compatible. If u follow dealer specs u are fine. My2001 Volvo s40 says Dexron or Mercon 3 are recommended.