Quote:
Originally Posted by T240
Roy, I'm sorry, but it is scientifically impossible to make a w20 or w30 oil perform as per a w40 at high ambient temperatures, no matter how much high tech you throw at the problem.
As I wrote earlier, and it is a well recorded fact, that MB went through a phase of recommending w30 oils for all temperature use, and landed themselves with massive warranty claims as a result.
If you don't care to research this subject properly, then, quite frankly, Roy, it is your problem.
Cheers,
T
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I have researched the subject very fully, hence my postition. If you have any info you wish to impart I would be very please to look at it though. All my research leads me to belive that fully synthetic oils give the best engine protection, and as that's what Volvo recommend for my engine that's what I use.
I also used it in my 940 TD which now has 237,000 miles on it. I've never seen the temperature gauge go above normal on that either.
I did have a Merc for a short while but I didn't like it so I'm not up on the ins and outs of their engines nowdays and I'm only really interested in Volvo's.