- Jan 27, 2006
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Desert temps can get HOT as obviously you know, I imagine that 10w30 would run like water when temps get up there...10w40 would be excellent IMO, heck even 20w50 would'nt be out of line if your still seeing lower pressure with the triple digit temps outside.
Sometimes when I'm not spending valuable work hours in the talk section I do venture over here...and hey sometimes I get lucky when I put some thought into a question JTHmm, didnt realize we had a desert inhabitor here. Very good point Derek.
I agree about the thicker weight if needed (I run both of the weights Derek noted). The only time I wouldnt is if the engine is fairly fresh - tolerances should be tight and it should not be needed.
Or run a synthetic (in my experience in the heat, synthetic 15W-50 at operating temps holds pressure like a dino 10W-40 [in hot ambient temps]. Even if pressure is lacking, you know you have top notch clinging (esp with more PAE in the oil).

Sometimes when I'm not spending valuable work hours in the talk section I do venture over here...and hey sometimes I get lucky when I put some thought into a question JT![]()