Shell also has the Rotella T6 in 5W30. They call it Multi Vehicle Full Synthetic.
"Developing this oil required Shell to do a number of things to make it meet certain requirements, especially on passenger cars. Specifically, Shell engineers had to work with the levels of phosphorous (a main oil conditioner); too high of a phosphorous level has been linked to excessive wear of engine parts.
“We had to design the oil with a lower phosphorous level so it would provide protection to the catalyst in that application,” Arcy says. “Then we had to introduce non-phosphorous chemicals to boost the oil to give the diesel side the protection it is accustomed to from the Rotella products.”
Starting work on this challenge back in June 2011, Shell engineers first developed new oil formulas and then bench-tested these new prototype oil formulas on a lab table, looking at various attributes of the oil’s performance, like wear, dispersancy, and corrosion, for example."
"Developing this oil required Shell to do a number of things to make it meet certain requirements, especially on passenger cars. Specifically, Shell engineers had to work with the levels of phosphorous (a main oil conditioner); too high of a phosphorous level has been linked to excessive wear of engine parts.
“We had to design the oil with a lower phosphorous level so it would provide protection to the catalyst in that application,” Arcy says. “Then we had to introduce non-phosphorous chemicals to boost the oil to give the diesel side the protection it is accustomed to from the Rotella products.”
Starting work on this challenge back in June 2011, Shell engineers first developed new oil formulas and then bench-tested these new prototype oil formulas on a lab table, looking at various attributes of the oil’s performance, like wear, dispersancy, and corrosion, for example."
