In another post I said that I was considering trying a monograde hdeo for my jeep CRD. I have been very interested in the discussion about the monograde and multigrade oils. I have access to shell products close by where I live. I went to the Shell Website to compare their specs on their Rotella oils. I was very suprised to see IF I interpreted the data corectly, that their mulitgrade oils were "thicker" @ 100 c than the strait grade oils. I will try to post what I found.
All below are for the Rotella products:
100c flash pour point
SAE 30 10.9 252c -18c
Sae 40 14.4 238c -15
5-40syn. 15.0 222c -40
15w40cj 15.5 204c -40
10w30cj 12.1 204c -40
Are the numbers that are posted for the 100c a lot of difference in thickness? It seems like it is. I was considering trying a straight 30 for the three summer months but since my engine calls for xx-40 it looks like the 30 weight would be too thin, and even the straight 40 weight is thinner than the multigrades. Wow, there's a lot for me to consider. All comments appreciated.
All below are for the Rotella products:
100c flash pour point
SAE 30 10.9 252c -18c
Sae 40 14.4 238c -15
5-40syn. 15.0 222c -40
15w40cj 15.5 204c -40
10w30cj 12.1 204c -40
Are the numbers that are posted for the 100c a lot of difference in thickness? It seems like it is. I was considering trying a straight 30 for the three summer months but since my engine calls for xx-40 it looks like the 30 weight would be too thin, and even the straight 40 weight is thinner than the multigrades. Wow, there's a lot for me to consider. All comments appreciated.