July Close-Out on CI-only-rated Diesel Oil

'Just got this note from Andy Beckman:

For the last couple seasons, I've still been able to get CI-spec (not CJ - I checked the container very thoroughly with each purchase) Castrol Diesel oil (quarts only) for my '64 Daytona hardtop at Advance Auto. However, when I stopped to get some today, it was clearenced out (I bought the last three quarts). Best of all it was marked down to $3.45 a quart!

Of course, I have no idea how widespread this is; Andy is in South Bend and I am downstate Indiana 135 miles or so. But it stands to reason that they would be closing out older diesel oil with the CI only (not CJ) rating, so it's worth checking out if you have an Advance Auto nearby.

(CI-rated oil has/had enough ZDDP in it to use right out of the bottle with no supplements, but the amount of ZDDP in the newer CJ-rated oil does not. As Andy cautions, read the container carefully. If it says suitable for CJ, or meets CJ specifications, it's certainly good enough to use in your flat-tappet camshaft engine, but will need a ZDDP supplement to do so.) BP

Source: http://forum.studebakerdriversclub.com/showthread.php?73076-July-Close-Out-on-CI-only-rated-Diesel-Oil&goto=newpost

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