That sounds right. I work for a Lexus dealer. Lexus vehicles are way different from Fords and I have never seen a DOHC head up close, so I don't know. Why are they saying that your left side head has the problem now?
Originally posted by Speedracer XTC
Going with a heavier oil will make the problem worse. It will increase the restriction and decrease the flow to vital areas. This has been addressed by Ford directly and it will result in voiding your engine's warranty. I have seen an entire fleet of Police vehicles have their warranties voided because the fleet manager wanted to use a Fleet Oil that was a 30Wt. Needless to say, he was fired.
Originally posted by Roush97
My Cobra engine isn't installed in a vehicle but the dipstick tube doesn't look like it would be hard to install in the car with everything on the engine. The dipstick tube bolts to the driver's side head so the head has to be installed for it to be bolted on.