I HAVE ALWAYS USED 20W-50! IT'S ALSO WHAT THE BOOK,(OWNERS MANUAL) CALLS FOR IN 90 DEGREE WHEATHER. BRANDS? VALVOLINE, MOBIL ONE(IF YOU CAN AFFORD IT). RIGHT NOW IAM WORKING CASTROL GTX RACING, WHEN THE TEMPERATURE GETS ABOVE 100 OUT HERE IN THE CENTRAL VALLEY, THE CASTROL STAYS UP AT 45 PSIG. AND I HAVE YET TO HEAR ANY LIFTER NOISE FROM THINNED OIL. THE 20(WINTER)(ADDITIVES,DETERGENTS,SUSPENDERS, ETC.) PART IS TO KEEP LIFTER,(AND OTHER PARTS)"VARNISHING" TO A MINIMUM!! THATS THE REASON I DO NOT RUN STRAIGHT 50 WEIGHT IN THIS HEAT. REGARDS, MARLIN.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.