We all know how Pennzoil said that no other oil kept engines factory clean and then in small print this was based on testing of 5w30.
Well, the 5w40, in Shell Helix Ultra form in Australia, now claims the same thing with this small print:
Quote:
Based on Sequence VG sludge test results using 0W-40
http://www.shell.com.au/products-service...ultra-5w40.html
They are also making claims about their 0w20.
Well, the 5w40, in Shell Helix Ultra form in Australia, now claims the same thing with this small print:
Quote:
Based on Sequence VG sludge test results using 0W-40
http://www.shell.com.au/products-service...ultra-5w40.html
They are also making claims about their 0w20.